Powertrain · P codes · 995 codes
Emission control (catalyst, EVAP, EGR)
Catalytic converters, the EVAP fuel-vapor system, EGR, secondary air, diesel aftertreatment (DPF, SCR/DEF, NOx) and crankcase ventilation.
Codes in this group
995
Generic SAE codes · OBDex
Rated urgent
10%
96 codes · our rating
DIY-friendly
47%
468 codes · per OBDex
Typical labor
$90–$315
Median hours × $125/hr · est.
01 —Start here
Most looked-up codes in this group
- P0420Catalyst System Efficiency Below Threshold (Bank 1)Often: catalyst aged or contaminatedModerate$190–$625 labor est.
- P0455Evaporative Emission System Leak Detected (Large Leak)Often: EVAP hose disconnectedLow$15–$315 labor est.
- P0442Evaporative Emission System Leak Detected (Small Leak)Often: fuel cap loose, missing, or worn sealLow$15–$250 labor est.
- P0401Exhaust Gas Recirculation Flow Insufficient DetectedOften: intake EGR passages blocked with carbonModerate$125–$625 labor est.
- P0440Evaporative Emission Control System MalfunctionOften: fuel filler cap loose or wornLow$25–$315 labor est.
- P0446Evaporative Emission Vent Control Circuit MalfunctionOften: vent valve seized or contaminated by water/dirtLow$40–$190 labor est.
- P0430Catalyst System Efficiency Below Threshold (Bank 2)Often: catalyst aged or contaminatedModerate$190–$625 labor est.
- P0456Evaporative Emission System Leak Detected (Very Small Leak)Often: fuel cap seal hardened or wornLow$15–$375 labor est.
Code data: OBDex (CC0) · labor estimates at $125/hr, parts extra
02 —Full list
All 995 codes
Grouped by the first three characters of the code.
P00xx
2 codes
P01xx
1 code
P04xx
214 codes
- P0400Exhaust Gas Recirculation Flow Malfunction
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403EGR Control Circuit
- P0404EGR Range/Performance
- P0405Exhaust Gas Recirculation Sensor "A" Circuit Low
- P0406Exhaust Gas Recirculation Sensor "A" Circuit High
- P0407EGR Sensor B Circuit Low
- P0408Exhaust Gas Recirculation Sensor "B" Circuit Low
- P0409Exhaust Gas Recirculation Sensor "B" Circuit High
- P040AEGR Temperature Sensor A Circuit
- P040BEGR Temperature Sensor A Circuit Range/Performance
- P040CEGR Temperature Sensor A Circuit Low
- P040DEGR Temperature Sensor A Circuit High
- P040EEGR Temperature Sensor A Circuit Intermittent/Erratic
- P040FEGR Temperature Sensor A/B Correlation
- P0410Secondary Air Injection System Malfunction
- P0411Secondary Air Injection System Incorrect Flow
- P0412Secondary Air Injection System Switching Valve A Circuit
- P0413Secondary Air Injection System Switching Valve A Circuit Open
- P0414Secondary Air Injection System Switching Valve "A" Circuit Shorted
- P0415Secondary Air Injection System Switching Valve B Circuit
- P0416Secondary Air Injection System Switching Valve B Circuit Open
- P0417Secondary Air Injection System Switching Valve B Circuit Shorted
- P0418Secondary Air Injection System Relay "A" Circuit Malfunction
- P0419Secondary Air Injection System Control B Circuit
- P041AEGR Temperature Sensor B Circuit
- P041BEGR Temperature Sensor B Circuit Range/Performance
- P041CEGR Temperature Sensor B Circuit Low
- P041DEGR Temperature Sensor B Circuit High
- P041EEGR Temperature Sensor B Circuit Intermittent/Erratic
- P041FSecondary Air Injection System Switching Valve A Circuit Low
- P0420Catalyst System Efficiency Below Threshold (Bank 1)
- P0421Warm Up Catalyst Efficiency Below Threshold (Bank 1)
- P0422Main Catalyst Efficiency Below Threshold (Bank 1)
- P0423Heated Catalyst Efficiency Below Threshold (Bank 1)
- P0424Heated Catalyst Temperature Below Threshold (Bank 1)
- P0425Catalyst Temperature Sensor (Bank 1, Sensor 1)
- P0426Catalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)
- P0427Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 1)
- P0428Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 1)
- P0429Catalyst Heater Control Circuit/Open (Bank 1)
- P042ACatalyst Temperature Sensor Circuit (Bank 1 Sensor 2)
- P042BCatalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2)
- P042CCatalyst Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- P042DCatalyst Temperature Sensor Circuit High (Bank 1 Sensor 2)
- P042EEGR A Control Stuck Open
- P042FEGR A Control Stuck Closed
- P0430Catalyst System Efficiency Below Threshold (Bank 2)
- P0431Warm Up Catalyst Efficiency Below Threshold (Bank 2)
- P0432Main Catalyst Efficiency Below Threshold (Bank 2)
- P0433Heated Catalyst Efficiency Below Threshold (Bank 2)
- P0434Heated Catalyst Temperature Below Threshold (Bank 2)
- P0435Catalyst Temperature Sensor Circuit (Bank 2 Sensor 1)
- P0436Catalyst Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 1)
- P0437Catalyst Temperature Sensor Circuit Low (Bank 2 Sensor 1)
- P0438Catalyst Temperature Sensor Circuit High (Bank 2 Sensor 1)
- P0439Catalyst Heater Control Circuit/Open (Bank 2)
- P043ACatalyst Temperature Sensor Circuit (Bank 2 Sensor 2)
- P043BCatalyst Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
- P043CCatalyst Temperature Sensor Circuit Low (Bank 2 Sensor 2)
- P043DCatalyst Temperature Sensor Circuit High (Bank 2 Sensor 2)
- P043EEVAP System Leak Detection Reference Orifice Low Flow
- P043FEVAP System Leak Detection Reference Orifice High Flow
- P0440Evaporative Emission Control System Malfunction
- P0441Evaporative Emission System Incorrect Purge Flow
- P0442Evaporative Emission System Leak Detected (Small Leak)
- P0443Evaporative Emission System Purge Control Valve Circuit
- P0444Evaporative Emission Purge Control Valve Circuit Open
- P0445Evaporative Emission System Purge Control Valve Circuit Shorted
- P0446Evaporative Emission Vent Control Circuit Malfunction
- P0447Evaporative Emission System Vent Control Circuit Open
- P0448EVAP System Vent Control Circuit Shorted
- P0449Evaporative Emission System Vent Valve/Solenoid Circuit Malfunction
- P044AEGR Sensor C Circuit
- P044BEGR Sensor C Circuit Range/Performance
- P044CEGR Sensor C Circuit Low
- P044DEGR Sensor C Circuit High
- P044EEGR Sensor C Circuit Intermittent/Erratic
- P044FSecondary Air Injection System Switching Valve A Circuit High
- P0450EVAP System Pressure Sensor/Switch A Circuit
- P0451Evaporative Emission System Pressure Sensor Range/Performance
- P0452Evaporative Emission System Pressure Sensor Low Input
- P0453Evaporative Emission System Pressure Sensor High Input
- P0454EVAP System Pressure Sensor/Switch A Circuit Intermittent
- P0455Evaporative Emission System Leak Detected (Large Leak)
- P0456Evaporative Emission System Leak Detected (Very Small Leak)
- P0457Evaporative Emission System Leak Detected (Fuel Cap Loose/Off)
- P0458EVAP System Purge Control Valve A Circuit Low
- P0459EVAP System Purge Control Valve A Circuit High
- P045AEGR B Control Circuit
- P045BEGR B Control Circuit Range/Performance
- P045CEGR B Control Circuit Low
- P045DEGR B Control Circuit High
- P045EEGR B Control Stuck Open
- P045FEGR B Control Stuck Closed
- P0465EVAP Purge Flow Sensor Circuit
- P0466EVAP Purge Flow Sensor Circuit Range/Performance
- P0467EVAP Purge Flow Sensor Circuit Low
- P0468EVAP Purge Flow Sensor Circuit High
- P0469EVAP Purge Flow Sensor Circuit Intermittent
- P046ACatalyst Temperature Sensor 1/2 Correlation (Bank 1)
- P046BCatalyst Temperature Sensor 1/2 Correlation (Bank 2)
- P046CEGR Sensor A Circuit Range/Performance
- P046DEGR Sensor A Circuit Intermittent/Erratic
- P046EEGR Sensor B Circuit Range/Performance
- P046FEGR Sensor B Circuit Intermittent/Erratic
- P0470Exhaust Pressure Sensor A Circuit
- P0471Exhaust Pressure Sensor A Circuit Range/Performance
- P0472Exhaust Pressure Sensor A Circuit Low
- P0473Exhaust Pressure Sensor A Circuit High
- P0474Exhaust Pressure Sensor A Circuit Intermittent/Erratic
- P0475Exhaust Pressure Control Valve A
- P0476Exhaust Pressure Control Valve A Range/Performance
- P0477Exhaust Pressure Control Valve A Low
- P0478Exhaust Pressure Control Valve A High
- P0479Exhaust Pressure Control Valve A Intermittent
- P047AExhaust Pressure Sensor B Circuit
- P047BExhaust Pressure Sensor B Circuit Range/Performance
- P047CExhaust Pressure Sensor B Circuit Low
- P047DExhaust Pressure Sensor B Circuit High
- P047EExhaust Pressure Sensor B Circuit Intermittent/Erratic
- P047FExhaust Pressure Control Valve A Stuck Open
- P0486EGR Sensor B Circuit
- P0487EGR Throttle Control Circuit A/Open
- P0488EGR Throttle Control Circuit A Range/Performance
- P0489EGR A Control Circuit Low
- P048AExhaust Pressure Control Valve A Stuck Closed
- P048BExhaust Pressure Control Valve A Position Sensor/Switch Circuit
- P048CExhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance
- P048DExhaust Pressure Control Valve A Position Sensor/Switch Circuit Low
- P048EExhaust Pressure Control Valve A Position Sensor/Switch Circuit High
- P048FExhaust Pressure Control Valve A Position Sensor/Switch Circuit Intermittent/Erratic
- P0490EGR A Control Circuit High
- P0491Secondary Air Injection System Insufficient Flow (Bank 1)
- P0492Secondary Air Injection System Insufficient Flow (Bank 2)
- P0493Fan Overspeed
- P0494Fan 1 Underspeed
- P0495Fan 1 Overspeed
- P0496Evaporative Emission System High Purge Flow
- P0497EVAP System Low Purge Flow
- P0498EVAP System Vent Valve Control Circuit Low
- P0499EVAP System Vent Valve Control Circuit High
- P049AEGR B Flow
- P049BEGR B Flow Insufficient Detected
- P049CEGR B Flow Excessive Detected
- P049DEGR A Control Position Exceeded Learning Limit
- P049EEGR B Control Position Exceeded Learning Limit
- P049FExhaust Pressure Control Valve B
- P04A0Exhaust Pressure Control Valve B Range or Performance
- P04A1Exhaust Pressure Control Valve B Low
- P04A2Exhaust Pressure Control Valve B High
- P04A3Exhaust Pressure Control Valve B Intermittent
- P04A4Exhaust Pressure Control Valve B Stuck Open
- P04A5Exhaust Pressure Control Valve B Stuck Closed
- P04A6Exhaust Pressure Control Valve B Position Sensor Circuit
- P04A7Exhaust Pressure Control Valve B Position Sensor Circuit Range or Performance
- P04A8Exhaust Pressure Control Valve B Position Sensor Circuit Low
- P04A9Exhaust Pressure Control Valve B Position Sensor Circuit High
- P04AAExhaust Pressure Control Valve B Position Sensor Circuit Intermittent or Erratic
- P04ABEVAP System Purge Control Valve B Circuit Open
- P04ACEVAP System Purge Control Valve B Circuit Low
- P04ADEVAP System Purge Control Valve B Circuit High
- P04AEEVAP System Purge Control Valve B Performance Stuck Open
- P04AFEVAP System Purge Control Valve B Stuck Closed
- P04CEEGR Temperature Sensor C Circuit
- P04CFEGR Temperature Sensor C Circuit Range or Performance
- P04D0EGR Temperature Sensor C Circuit Low
- P04D1EGR Temperature Sensor C Circuit High
- P04D2EGR Temperature Sensor C Circuit Intermittent or Erratic
- P04D3Exhaust Brake Input Circuit
- P04D4Exhaust Brake Input Circuit Range or Performance
- P04D5Exhaust Brake Input Circuit Low
- P04D6Exhaust Brake Input Circuit High
- P04D7Exhaust Brake Input Circuit Intermittent or Erratic
- P04D8Excessive Time To Enter Closed Loop EGR Control
- P04D9Closed Loop EGR Control At Limit Flow Too Low
- P04DAClosed Loop EGR Control At Limit Flow Too High
- P04DBCrankcase Ventilation System Disconnected
- P04DDCold Start EGR A Flow Insufficient Detected
- P04DECold Start EGR A Flow Excessive Detected
- P04DFEVAP System Purge Control Valve A Performance Stuck Open
- P04E0EVAP System Purge Control Valve A Stuck Closed
- P04E1Crankcase Ventilation Hose Connection Sensor Circuit
- P04E2Crankcase Ventilation Hose Connection Sensor Circuit Low
- P04E3Crankcase Ventilation Hose Connection Sensor Circuit High
- P04E4Crankcase Ventilation Hose Connection Sensor Circuit Intermittent or Erratic
- P04E5EGR Temperature Sensor D Circuit
- P04E6EGR Temperature Sensor D Circuit Range or Performance
- P04E7EGR Temperature Sensor D Circuit Low
- P04E8EGR Temperature Sensor D Circuit High
- P04E9EGR Temperature Sensor D Circuit Intermittent or Erratic
- P04EAEVAP System Small Leak Detected Fuel Tank Side
- P04EBEVAP System Small Leak Detected Fresh Air Side
- P04ECEVAP System Large Leak Detected Fuel Tank Side
- P04EDEVAP System Large Leak Detected Fresh Air Side
- P04EEEVAP System Very Small Leak Detected Fuel Tank Side
- P04EFEVAP System Very Small Leak Detected Fresh Air Side
- P04F0EVAP System High Load Purge Line A Performance
- P04F1EVAP System Purge Line Performance
- P04F2Catalyst Heater Supply Voltage Bank 1
- P04F3Catalyst Heater Supply Voltage Bank 2
- P04F4Catalyst Heater Circuit Low Bank 1
- P04F5Catalyst Heater Circuit Low Bank 2
- P04F6Catalyst Heater Circuit High Bank 1
- P04F7Catalyst Heater Circuit High Bank 2
- P04F8Catalyst Heater Circuit Intermittent Bank 1
- P04F9Catalyst Heater Circuit Intermittent Bank 2
- P04FAEGR A Control Temperature Too High
- P04FBCrankcase Ventilation Hose Connection Sensor Range or Performance
- P04FCCrankcase Ventilation System Performance
- P04FDEGR Actuator A Control Processor Performance
- P04FECatalyst Heater Circuit Performance Bank 1
- P04FFCatalyst Heater Circuit Performance Bank 2
P05xx
41 codes
- P050ECold Start Engine Exhaust Temperature Too Low
- P051ACrankcase Pressure Sensor A Circuit
- P051BCrankcase Pressure Sensor A Circuit Range or Performance
- P051CCrankcase Pressure Sensor A Circuit Low
- P051DCrankcase Pressure Sensor A Circuit High
- P051ECrankcase Pressure Sensor A Circuit Intermittent or Erratic
- P051FPCV Filter Restriction
- P052EPCV Regulator Valve Performance
- P0535A/C Evaporator Temperature Sensor Circuit
- P0536A/C Evaporator Temperature Sensor Circuit Range or Performance
- P0537A/C Evaporator Temperature Sensor Circuit Low
- P0538A/C Evaporator Temperature Sensor Circuit High
- P0539A/C Evaporator Temperature Sensor Circuit Intermittent
- P053APCV Heater A Control Circuit Open
- P053BPCV Heater A Control Circuit Low
- P053CPCV Heater A Control Circuit High
- P053DPCV Heater A Performance
- P053ECrankcase Pressure Too High
- P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1
- P0545Exhaust Gas Temperature Sensor Bank 1 Sensor 1 Low
- P0546Exhaust Gas Temperature Sensor Bank 1 Sensor 1 High
- P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1
- P0548Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
- P0549Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1
- P056DReductant Control Module System Voltage
- P05D8PCV Regulator Valve Control Circuit Open
- P05D9PCV Regulator Valve Control Circuit Low
- P05DAPCV Regulator Valve Control Circuit High
- P05EBCold Start SCR NOx Catalyst Inlet Temperature Too Low
- P05EDReductant Heater Control Module Supply Voltage
- P05EEReductant Pump Supply Voltage Circuit Open
- P05EFReductant Pump Supply Voltage Circuit Low
- P05F0Reductant Pump Supply Voltage Circuit High
- P05F1Reductant Pump Supply Voltage Circuit Stuck On
- P05F2Reductant Pump Supply Voltage Circuit Stuck Off
- P05F3Exhaust Aftertreatment Power Relay Control Circuit Open
- P05F4Exhaust Aftertreatment Power Relay Control Circuit Low
- P05F5Exhaust Aftertreatment Power Relay Control Circuit High
- P05F6Exhaust Aftertreatment Power Relay Control Circuit Stuck On
- P05F7Exhaust Aftertreatment Power Relay Control Circuit Stuck Off
- P05F8Reductant Heater Control Module Performance
P06xx
8 codes
- P0624Fuel Cap Lamp Control Circuit
- P065DReductant System Malfunction Lamp Control Circuit
- P06EANOx Sensor Processor Performance Bank 1 Sensor 1
- P06EBNOx Sensor Processor Performance Bank 1 Sensor 2
- P06F0Reductant Control Module Internal Temperature Sensor Circuit
- P06F1Reductant Control Module Internal Temperature Sensor Range or Performance
- P06F2Reductant Control Module Internal Temperature Sensor Circuit Low
- P06F3Reductant Control Module Internal Temperature Sensor Circuit High
P20xx
195 codes
- P2000NOx Adsorber Efficiency Below Threshold (Bank 1)
- P2001NOx Adsorber Efficiency Below Threshold (Bank 2)
- P2002Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
- P2003Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
- P200CParticulate Filter Over Temperature (Bank 1)
- P200DParticulate Filter Over Temperature (Bank 2)
- P200ECatalyst System Over Temperature (Bank 1)
- P200FCatalyst System Over Temperature (Bank 2)
- P201AReductant Injection Valve Circuit Range/Performance (Bank 2 Unit 1)
- P201FReductant Pump A Stuck On
- P2024EVAP Fuel Vapor Temperature Sensor Circuit
- P2025EVAP Fuel Vapor Temperature Sensor Performance
- P2026EVAP Fuel Vapor Temperature Sensor Circuit Low Voltage
- P2028EVAP Fuel Vapor Temperature Sensor Circuit Intermittent
- P202AReductant Tank Heater Control Circuit/Open
- P202BReductant Tank Heater Control Circuit Low
- P202CReductant Tank Heater Control Circuit High
- P202DReductant Leakage
- P202EReductant Injection Valve Circuit Range/Performance (Bank 1 Unit 1)
- P202FReductant/Regeneration Supply Control Circuit Range/Performance
- P2031Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
- P2032Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- P2033Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
- P2034Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 2)
- P2035Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 2)
- P2036Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 2)
- P2037Reductant Injection Air Pressure Sensor A Circuit
- P2038Reductant Injection Air Pressure Sensor A Circuit Range/Performance
- P2039Reductant Injection Air Pressure Sensor A Circuit Low
- P203AReductant Level Sensor A Circuit
- P203BReductant Level Sensor A Circuit Range/Performance
- P203CReductant Level Sensor A Circuit Low
- P203DReductant Level Sensor A Circuit High
- P203EReductant Level Sensor A Circuit Intermittent/Erratic
- P203FReductant Level Too Low
- P2040Reductant Injection Air Pressure Sensor A Circuit High
- P2041Reductant Injection Air Pressure Sensor A Circuit Intermittent
- P2042Reductant Temperature Sensor A Circuit
- P2043Reductant Temperature Sensor A Circuit Range/Performance
- P2044Reductant Temperature Sensor A Circuit Low
- P2045Reductant Temperature Sensor A Circuit High
- P2046Reductant Temperature Sensor A Circuit Intermittent
- P2047Reductant Injection Valve Circuit/Open (Bank 1 Unit 1)
- P2048Reductant Injection Valve Circuit Low (Bank 1 Unit 1)
- P2049Reductant Injection Valve Circuit High (Bank 1 Unit 1)
- P204AReductant Pressure Sensor Circuit
- P204BReductant Pressure Sensor Circuit Range/Performance
- P204CReductant Pressure Sensor Circuit Low
- P204DReductant Pressure Sensor Circuit High
- P204EReductant Pressure Sensor Circuit Intermittent/Erratic
- P204FReductant System Performance
- P2050Reductant Injection Valve Circuit/Open (Bank 2 Unit 1)
- P2051Reductant Injection Valve Circuit Low (Bank 2 Unit 1)
- P2052Reductant Injection Valve Circuit High (Bank 2 Unit 1)
- P2053Reductant Injection Valve Circuit/Open (Bank 1 Unit 2)
- P2054Reductant Injection Valve Circuit Low (Bank 1 Unit 2)
- P2055Reductant Injection Valve Circuit High (Bank 1 Unit 2)
- P2056Reductant Injection Valve Circuit/Open (Bank 2 Unit 2)
- P2057Reductant Injection Valve Circuit Low (Bank 2 Unit 2)
- P2058Reductant Injection Valve Circuit High (Bank 2 Unit 2)
- P2059Reductant Injection Air Pump Control Circuit/Open
- P205AReductant Tank Temperature Sensor A Circuit
- P205BReductant Tank Temperature Sensor A Circuit Range/Performance
- P205CReductant Tank Temperature Sensor A Circuit Low
- P205DReductant Tank Temperature Sensor A Circuit High
- P205EReductant Tank Temperature Sensor A Circuit Intermittent/Erratic
- P205FReductant System Performance (Bank 2)
- P2060Reductant Injection Air Pump Control Circuit Low
- P2061Reductant Injection Air Pump Control Circuit High
- P2062Reductant/Regeneration Supply Control Circuit/Open
- P2063Reductant/Regeneration Supply Control Circuit Low
- P2064Reductant/Regeneration Supply Control Circuit High
- P206AReductant Quality Sensor Circuit
- P206BReductant Quality Sensor Circuit Range/Performance
- P206CReductant Quality Sensor Circuit Low
- P206DReductant Quality Sensor Circuit High
- P207FReductant Quality Performance
- P2080Exhaust Gas Temperature Sensor Range/Performance (Bank 1 Sensor 1)
- P2081Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 1 Sensor 1)
- P2082Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 1)
- P2083Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 1)
- P2084Exhaust Gas Temperature Sensor Range/Performance (Bank 1 Sensor 2)
- P2085Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 1 Sensor 2)
- P2086Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
- P2087Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 2)
- P208AReductant Pump A Control Circuit/Open
- P208BReductant Pump A Control Performance/Stuck Off
- P208CReductant Pump A Control Circuit Low
- P208DReductant Pump A Control Circuit High
- P208EReductant Injection Valve Stuck Closed (Bank 1 Unit 1)
- P208FReductant Injection Valve Stuck Closed (Bank 2 Unit 1)
- P2096Post Catalyst Fuel Trim System Too Lean (Bank 1)
- P2097Post Catalyst Fuel Trim System Too Rich (Bank 1)
- P2098Post Catalyst Fuel Trim System Too Lean (Bank 2)
- P2099Post Catalyst Fuel Trim System Too Rich (Bank 2)
- P209AReductant Injection Air Pressure Sensor B Circuit
- P209BReductant Injection Air Pressure Sensor B Circuit Range/Performance
- P209CReductant Injection Air Pressure Sensor B Circuit Low
- P209DReductant Injection Air Pressure Sensor B Circuit High
- P209EReductant Injection Air Pressure Sensor A/B Correlation
- P209FReductant Tank Heater Control Circuit Performance
- P20A0Reductant Purge Control Valve A Circuit/Open
- P20A1Reductant Purge Control Valve A Performance
- P20A2Reductant Purge Control Valve A Circuit Low
- P20A3Reductant Purge Control Valve A Circuit High
- P20A4Reductant Purge Control Valve A Stuck Open
- P20A5Reductant Purge Control Valve A Stuck Closed
- P20A6Reductant Injection Air Pressure Control Valve Circuit/Open
- P20A7Reductant Injection Air Pressure Control Valve Performance
- P20A8Reductant Injection Air Pressure Control Valve Circuit Low
- P20A9Reductant Injection Air Pressure Control Valve Circuit High
- P20AAReductant Injection Air Pressure Control Valve Stuck Open
- P20ABReductant Injection Air Pressure Control Valve Stuck Closed
- P20ACReductant Metering Unit Temperature Sensor Circuit
- P20ADReductant Metering Unit Temperature Sensor Circuit Range/Performance
- P20AEReductant Metering Unit Temperature Sensor Circuit Low
- P20AFReductant Metering Unit Temperature Sensor Circuit High
- P20B0Reductant Metering Unit Temperature Sensor Circuit Intermittent/Erratic
- P20B1Reductant Heater Coolant Control Valve Circuit/Open
- P20B2Reductant Heater Coolant Control Valve Performance/Stuck Open
- P20B3Reductant Heater Coolant Control Valve Circuit Low
- P20B4Reductant Heater Coolant Control Valve Circuit High
- P20B5Reductant Metering Unit Heater Control Circuit/Open
- P20B6Reductant Metering Unit Heater Control Circuit Performance
- P20B7Reductant Metering Unit Heater Control Circuit Low
- P20B8Reductant Metering Unit Heater Control Circuit High
- P20B9Reductant Heater A Control Circuit/Open
- P20BAReductant Heater A Control Performance
- P20BBReductant Heater A Control Circuit Low
- P20BCReductant Heater A Control Circuit High
- P20BDReductant Heater B Control Circuit/Open
- P20BEReductant Heater B Control Circuit Performance
- P20BFReductant Heater B Control Circuit Low
- P20C0Reductant Heater B Control Circuit High
- P20C1Reductant Heater C Control Circuit/Open
- P20C2Reductant Heater C Control Circuit Performance
- P20C3Reductant Heater C Control Circuit Low
- P20C4Reductant Heater C Control Circuit High
- P20C5Reductant Heater D Control Circuit/Open
- P20C6Reductant Heater D Control Circuit Performance
- P20C7Reductant Heater D Control Circuit Low
- P20C8Reductant Heater D Control Circuit High
- P20C9Reductant Control Module Requested MIL Illumination
- P20CAReductant Injection Air Pressure Leakage
- P20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open
- P20CCExhaust Aftertreatment Fuel Injector A Control Performance
- P20CDExhaust Aftertreatment Fuel Injector A Control Circuit Low
- P20CEExhaust Aftertreatment Fuel Injector A Control Circuit High
- P20CFExhaust Aftertreatment Fuel Injector A Stuck Open
- P20D0Exhaust Aftertreatment Fuel Injector A Stuck Closed
- P20D1Exhaust Aftertreatment Fuel Injector B Control Circuit/Open
- P20D2Exhaust Aftertreatment Fuel Injector B Control Performance
- P20D3Exhaust Aftertreatment Fuel Injector B Control Circuit Low
- P20D4Exhaust Aftertreatment Fuel Injector B Control Circuit High
- P20D5Exhaust Aftertreatment Fuel Injector B Stuck Open
- P20D6Exhaust Aftertreatment Fuel Injector B Stuck Closed
- P20D7Exhaust Aftertreatment Fuel Supply Control Circuit/Open
- P20D8Exhaust Aftertreatment Fuel Supply Control Performance
- P20D9Exhaust Aftertreatment Fuel Supply Control Circuit Low
- P20DAExhaust Aftertreatment Fuel Supply Control Circuit High
- P20DBExhaust Aftertreatment Fuel Supply Control Stuck Open
- P20DCExhaust Aftertreatment Fuel Supply Control Stuck Closed
- P20DDExhaust Aftertreatment Fuel Pressure Sensor Circuit
- P20DEExhaust Aftertreatment Fuel Pressure Sensor Circuit Range/Performance
- P20DFExhaust Aftertreatment Fuel Pressure Sensor Circuit Low
- P20E0Reductant Pressure Too Low
- P20E1Reductant Pressure Too Low
- P20E2Reductant Pressure Too High
- P20E3Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1)
- P20E4Exhaust Gas Temperature Sensor 2/3 Correlation (Bank 1)
- P20E5Exhaust Gas Temperature Sensor 1/2 Correlation (Bank 2)
- P20E6Reductant Injection Air Pressure Too Low
- P20E7Reductant Injection Air Pressure Too High
- P20E8Reductant Pressure Too Low
- P20E9Reductant Pressure Too High
- P20EAReductant Pump Control Circuit Open
- P20EBReductant Reservoir Heater "A" Control Circuit
- P20ECReductant Heater "A" Control Stuck Off
- P20EDReductant Heater "A" Control Stuck On
- P20EENOx Catalyst Efficiency Below Threshold (Bank 1)
- P20EFReductant Injection Valve Performance
- P20F0SCR NOx Catalyst Over Temperature (Bank 2)
- P20F1SCR NOx Pre-Catalyst Over Temperature (Bank 2)
- P20F2SCR NOx Catalyst Efficiency Below Threshold (Bank 2)
- P20F3SCR NOx Pre-Catalyst Efficiency Below Threshold (Bank 2)
- P20F4Reductant Consumption Too Low
- P20F5Reductant Consumption Too High
- P20F6Reductant Injection Valve Stuck Open (Bank 1 Unit 1)
- P20F7Reductant Injection Valve Stuck Open (Bank 2 Unit 1)
- P20FAReductant Pump B Control Circuit/Open
- P20FBReductant Pump B Control Performance/Stuck Off
- P20FCReductant Pump B Control Circuit Low
- P20FDReductant Pump B Control Circuit High
- P20FEReductant Metering Unit 1 Performance
- P20FFReductant Control Module Performance
P21xx
50 codes
- P213AEGR Throttle Control Circuit B/Open
- P213BEGR Throttle Control Circuit B Range/Performance
- P213CEGR Throttle Control Circuit B Low
- P213DEGR Throttle Control Circuit B High
- P2141EGR Throttle Control Circuit A Low
- P2142EGR Throttle Control Circuit A High
- P2143EGR Vent Control Circuit/Open
- P2144EGR Vent Control Circuit Low
- P2145EGR Vent Control Circuit High
- P214ASCR NOx Catalyst Inlet Temperature Too High
- P214BSCR NOx Catalyst Inlet Temperature Too High During Particulate Filter Regeneration
- P214CSCR NOx Catalyst Outlet Temperature Too High
- P214DSCR NOx Catalyst Outlet Temperature Too High During Particulate Filter Regeneration
- P214EReductant Pump A Current Too High
- P214FReductant Heater A Current Too High
- P215DReductant Pump B Stuck On
- P215EReductant Heater D Current Too Low
- P215FReductant Heater D Current Too High
- P2169Exhaust Pressure Regulator Vent Solenoid Control Circuit/Open
- P2170Exhaust Pressure Regulator Vent Solenoid Control Circuit Low
- P2171Exhaust Pressure Regulator Vent Solenoid Control Circuit High
- P218FReductant No Flow Detected
- P21A8Reductant Level Sensor B Circuit
- P21A9Reductant Level Sensor B Circuit Range/Performance
- P21AAReductant Level Sensor B Circuit Low
- P21ABReductant Level Sensor B Circuit High
- P21ACReductant Level Sensor B Circuit Intermittent/Erratic
- P21ADReductant Level Sensor C Circuit
- P21AEReductant Level Sensor C Circuit Range/Performance
- P21AFReductant Level Sensor C Circuit Low
- P21B0Reductant Level Sensor C Circuit High
- P21B1Reductant Level Sensor C Circuit Intermittent/Erratic
- P21B2Excessive Time To Enter Closed Loop NOx Adsorber Control
- P21B3Closed Loop NOx Adsorber Control At Limit - Too High
- P21B4NOx Adsorber Over Temperature (Bank 1)
- P21B5NOx Adsorber Over Temperature (Bank 2)
- P21C2Reductant Heater Relay Control Circuit/Open
- P21C3Reductant Heater Relay Control Circuit Low
- P21C4Reductant Heater Relay Control Circuit High
- P21C5Reductant Level Sensor A Stuck
- P21C6Reductant Level Sensor B Stuck
- P21C7Reductant Control Module Power Relay Control Circuit/Open
- P21C8Reductant Control Module Power Relay Control Circuit Low
- P21C9Reductant Control Module Power Relay Control Circuit High
- P21CAReductant Control Module Supply Voltage Circuit
- P21CBReductant Control Module Supply Voltage Low
- P21CCReductant Control Module Supply Voltage High
- P21CDReductant Quality Module Supply Voltage Low
- P21CEReductant Quality Module Performance
- P21DDReductant Heater A Current Too Low
P22xx
75 codes
- P2200NOx Sensor Circuit (Bank 1)
- P2201NOx Sensor Range/Performance (Bank 1)
- P2202NOx Sensor Circuit Low (Bank 1)
- P2203NOx Sensor Circuit High (Bank 1)
- P2204NOx Sensor Circuit Intermittent (Bank 1)
- P2205NOx Sensor Heater Control Circuit (Bank 1)
- P2206NOx Sensor Circuit (Bank 2)
- P2207NOx Sensor Circuit Range/Performance (Bank 2)
- P2208NOx Sensor Heater Circuit (Bank 2)
- P2209NOx Sensor Heater Sense Circuit Range/Performance (Bank 2)
- P220ANOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1)
- P220BNOx Sensor Supply Voltage Circuit (Bank 1 Sensor 2)
- P220CNOx Sensor Supply Voltage Circuit (Bank 2 Sensor 1)
- P220DNOx Sensor Supply Voltage Circuit (Bank 2 Sensor 2)
- P220ENOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 1)
- P220FNOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 2)
- P2210NOx Sensor Circuit Intermittent (Bank 2)
- P2211NOx Sensor Heater Sense Circuit Intermittent (Bank 2)
- P2212NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 1)
- P2213NOx Sensor Circuit (Bank 2)
- P2214NOx Sensor Circuit Range/Performance (Bank 2)
- P2215NOx Sensor Circuit Low (Bank 2)
- P2216NOx Sensor Circuit High (Bank 2)
- P2217NOx Sensor Circuit Intermittent (Bank 2)
- P2218NOx Sensor Heater Control Circuit/Open (Bank 2)
- P2219NOx Sensor Heater Control Circuit Low (Bank 2)
- P221ANOx Sensor 1/2 Correlation (Bank 1)
- P221BNOx Sensor 1/2 Correlation (Bank 2)
- P221CReductant Heater B Current Too Low
- P221DReductant Heater B Current Too High
- P221EReductant Heater C Current Too Low
- P221FReductant Heater C Current Too High
- P2220NOx Sensor Heater Control Circuit High (Bank 2)
- P2221NOx Sensor Heater Sense Circuit (Bank 2)
- P2222NOx Sensor Heater Sense Circuit Range/Performance (Bank 2)
- P2223NOx Sensor Heater Sense Circuit Low (Bank 2)
- P2224NOx Sensor Heater Sense Circuit High (Bank 2)
- P2225NOx Sensor Heater Sense Circuit Intermittent (Bank 2)
- P223AReductant Heater E Control Circuit
- P223BReductant Heater F Control Circuit
- P224ANOx Sensor Heater Resistance (Bank 1 Sensor 1)
- P224BNOx Sensor Heater Resistance (Bank 1 Sensor 2)
- P2257Secondary Air Injection System Control A Circuit Low
- P2258Secondary Air Injection System Control A Circuit High
- P2259Secondary Air Injection System Control B Circuit Low
- P225ANOx Sensor Calibration Memory (Bank 1 Sensor 1)
- P225BNOx Sensor Calibration Memory (Bank 1 Sensor 2)
- P225CNOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 1)
- P225DNOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 1)
- P225ENOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 2)
- P225FNOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 2)
- P2260Secondary Air Injection System Control B Circuit High
- P226DParticulate Filter Deteriorated/Missing Substrate (Bank 1)
- P226EParticulate Filter Deteriorated/Missing Substrate (Bank 2)
- P229ENOx Sensor Circuit (Bank 1 Sensor 2)
- P229FNOx Sensor Circuit Range/Performance Bank 1 Sensor 2
- P22A0NOx Sensor Circuit Low (Bank 1 Sensor 2)
- P22A1NOx Sensor Circuit High (Bank 1 Sensor 2)
- P22A2NOx Sensor Circuit Intermittent (Bank 1 Sensor 2)
- P22A3NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 2)
- P22A4NOx Sensor Heater Control Circuit Low (Bank 1 Sensor 2)
- P22A5NOx Sensor Heater Control Circuit High (Bank 1 Sensor 2)
- P22A6NOx Sensor Heater Sense Circuit (Bank 1 Sensor 2)
- P22A7NOx Sensor Heater Sense Circuit Range/Performance (Bank 1 Sensor 2)
- P22A8NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 2)
- P22A9NOx Sensor Heater Sense Circuit High (Bank 1 Sensor 2)
- P22AANOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 2)
- P22F1Particulate Matter Sensor Heater Performance
- P22F9NOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 1)
- P22FANOx Sensor Performance - Slow Response High to Low (Bank 1 Sensor 1)
- P22FBNOx Sensor Performance - Sensing Element (Bank 1 Sensor 1)
- P22FCNOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 2)
- P22FDNOx Sensor Performance Slow Response High to Low Bank 1 Sensor 2
- P22FENOx Sensor Sensing Element Bank 1 Sensor 2
- P22FFSCR NOx Catalyst Inlet Temperature Too Low
P23xx
41 codes
- P2381EGR Sensor D Circuit High
- P2382EGR Sensor D Circuit Low
- P2383EGR Sensor D Circuit Range or Performance
- P2384EGR Sensor D Circuit Intermittent
- P2385EGR Sensor E Circuit
- P2386EGR Sensor E Circuit High
- P2387EGR Sensor E Circuit Low
- P2388EGR Sensor E Circuit Range or Performance
- P2389EGR Sensor E Circuit Intermittent
- P23ABNOx Sensor Processor Performance Bank 1 Sensor 3
- P23ACNOx Sensor Circuit Bank 1 Sensor 3
- P23ADNOx Sensor Circuit Range or Performance Bank 1 Sensor 3
- P23AENOx Sensor Circuit Low Bank 1 Sensor 3
- P23AFNOx Sensor Circuit High Bank 1 Sensor 3
- P23B0NOx Sensor Circuit Intermittent Bank 1 Sensor 3
- P23B1NOx Sensor Heater Control Circuit Open Bank 1 Sensor 3
- P23B2NOx Sensor Heater Control Circuit Low Bank 1 Sensor 3
- P23B3NOx Sensor Heater Control Circuit High Bank 1 Sensor 3
- P23B4NOx Sensor Heater Sense Circuit Bank 1 Sensor 3
- P23B5NOx Sensor Heater Sense Circuit Range or Performance Bank 1 Sensor 3
- P23B6NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3
- P23B7NOx Sensor Heater Control Circuit Range or Performance Bank 1 Sensor 3
- P23B8NOx Sensor Heater Sense Circuit Low Bank 1 Sensor 3
- P23B9NOx Sensor Heater Sense Circuit High Bank 1 Sensor 3
- P23BANOx Sensor Heater Sense Circuit Intermittent Bank 1 Sensor 3
- P23BBNOx Sensor Heater Resistance Bank 1 Sensor 3
- P23BCNOx Sensor Calibration Memory Bank 1 Sensor 3
- P23BDNOx Sensor Performance Signal Biased or Stuck High Bank 1 Sensor 3
- P23BENOx Sensor Performance Signal Biased or Stuck Low Bank 1 Sensor 3
- P23BFNOx Sensor Performance Slow Response Low to High Bank 1 Sensor 3
- P23C0NOx Sensor Performance Slow Response High to Low Bank 1 Sensor 3
- P23C1NOx Sensor Sensing Element Bank 1 Sensor 3
- P23C2NOx Sensor Delayed Response High to Low Bank 1 Sensor 3
- P23E1EGR C Control Circuit Open
- P23E2EGR C Control Circuit Performance
- P23E3EGR C Control Circuit Low
- P23E4EGR C Control Circuit High
- P23E5EGR C Control Stuck Open
- P23E6EGR C Control Stuck Closed
- P23E7EGR C Flow Insufficient Detected
- P23E8EGR C Flow Excessive Detected
P24xx
247 codes
- P2400EVAP Leak Detection Pump Control Circuit Open
- P2401EVAP Leak Detection Pump Control Circuit Low
- P2402EVAP Leak Detection Pump Control Circuit High
- P2403EVAP System Leak Detection Pump Sense Circuit Open
- P2404EVAP Leak Detection Pump Sense Circuit Range/Performance
- P2405EVAP System Leak Detection Pump Sense Circuit Low
- P2406EVAP System Leak Detection Pump Sense Circuit High
- P2407EVAP Leak Detection Pump Sense Circuit Range/Performance
- P2408Fuel Cap Sensor/Switch Circuit Range/Performance
- P2409Fuel Cap Sensor or Switch Circuit Range or Performance
- P240AEVAP System Leak Detection Pump Heater Control Circuit Open
- P240BEVAP System Leak Detection Pump Heater Control Circuit Low
- P240CEVAP System Leak Detection Pump Heater Control Circuit High
- P240FEGR Slow Response
- P2410Fuel Cap Sensor/Switch Stuck
- P2411Fuel Cap Sensor/Switch Circuit
- P2412Fuel Cap Sensor or Switch Circuit Intermittent or Erratic
- P2413Exhaust Gas Recirculation System Performance
- P2415EVAP Switching Valve Circuit Open
- P2416EVAP Switching Valve Performance
- P2417EVAP Switching Valve Stuck Closed
- P2418EVAP Switching Valve Control Circuit Performance
- P2419EVAP Switching Valve Stuck Open
- P241DSCR Inducement Forced Engine Shutdown
- P241EReductant Heater Coolant Control Valve Stuck Closed
- P241FEGR Cooler B Efficiency Below Threshold
- P2420EVAP Switching Valve Stuck Closed
- P2421EVAP Vent Valve Stuck Open
- P2422EVAP Canister Vent Valve Stuck Closed
- P2423HC Adsorption Catalyst Efficiency Below Threshold Bank 1
- P2424HC Adsorption Catalyst Efficiency Below Threshold Bank 2
- P2425EGR Cooling Valve Control Circuit Open
- P2426EGR Cooling Valve Control Circuit Low
- P2427EGR Cooling Valve Control Circuit High
- P2428Exhaust Gas Temperature Too High Bank 1
- P2429Exhaust Gas Temperature Too High Bank 2
- P242AExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3
- P242BExhaust Gas Temperature Sensor Circuit Range or Performance Bank 1 Sensor 3
- P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P242DExhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3
- P242EExhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 3
- P242FParticulate Filter Restriction Ash Accumulation Bank 1
- P2430AIR System Air Flow or Pressure Sensor Circuit Bank 1
- P2431Secondary Air Injection System Air Flow/Pressure Sensor Circuit
- P2432Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
- P2433AIR System Air Flow or Pressure Sensor Circuit High Bank 1
- P2434AIR System Air Flow or Pressure Sensor Circuit Intermittent or Erratic Bank 1
- P2435AIR System Air Flow or Pressure Sensor Circuit Bank 2
- P2436AIR System Air Flow or Pressure Sensor Circuit Range or Performance Bank 2
- P2437AIR System Air Flow or Pressure Sensor Circuit Low Bank 2
- P2438AIR System Air Flow or Pressure Sensor Circuit High Bank 2
- P2439AIR System Air Flow or Pressure Sensor Circuit Intermittent or Erratic Bank 2
- P243AParticulate Filter Restriction Ash Accumulation Bank 2
- P243BParticulate Filter Restriction Forced Limited Power Bank 2
- P243CParticulate Filter Regeneration Frequency Bank 2
- P243DParticulate Filter Regeneration Duration Bank 2
- P243EParticulate Filter Regeneration Incomplete Bank 2
- P243FParticulate Filter Restriction Soot Accumulation Too High Bank 2
- P2440Secondary Air Injection System Switching Valve Stuck Open (Bank 1)
- P2441Secondary Air Injection System Switching Valve Stuck Closed (Bank 1)
- P2442Secondary Air Injection System Switching Valve Stuck Open (Bank 2)
- P2443Secondary Air Injection System Switching Valve Stuck Closed (Bank 2)
- P2444Secondary Air Injection System Pump Stuck Off (Bank 1)
- P2445Secondary Air Injection System Pump Stuck On (Bank 1)
- P2446Secondary Air Injection Pump Stuck Off (Bank 2)
- P2447Secondary Air Injection Pump Stuck On (Bank 2)
- P2448AIR System High Air Flow Bank 1
- P2449AIR System High Air Flow Bank 2
- P244ADiesel Particulate Filter Differential Pressure Too Low
- P244BDiesel Particulate Filter Differential Pressure Sensor Offset
- P244CExhaust Temperature Too Low For Particulate Filter Regeneration Bank 1
- P244DExhaust Temperature Too High For Particulate Filter Regeneration Bank 1
- P244EExhaust Temperature Too Low For Particulate Filter Regeneration Bank 2
- P244FExhaust Temperature Too High For Particulate Filter Regeneration Bank 2
- P2450EVAP System Switching Valve Performance/Stuck
- P2451EVAP System Switching Valve Stuck Closed
- P2452Diesel Particulate Filter Pressure Sensor Circuit
- P2453Diesel Particulate Filter Pressure Sensor Circuit Range/Performance
- P2454Diesel Particulate Filter Pressure Sensor Circuit Low
- P2455Diesel Particulate Filter Pressure Sensor Circuit High
- P2456DPF Differential Pressure Sensor Circuit Intermittent
- P2457EGR Cooler Performance
- P2458DPF Regeneration Duration
- P2459Diesel Particulate Filter Regeneration Frequency
- P245AEGR Cooler Bypass Control Circuit Open Bank 1
- P245BEGR Cooler Bypass Control Circuit Range or Performance Bank 1
- P245CEGR Cooler Bypass Control Circuit Low Bank 1
- P245DEGR Cooler Bypass Control Circuit High Bank 1
- P245EParticulate Filter Pressure Sensor B Circuit
- P245FParticulate Filter Pressure Sensor B Circuit Range or Performance
- P2460DPF Restriction — Forced Limited Power
- P2461DPF Restriction — Forced Limited
- P2462Diesel Particulate Filter Restriction - Soot Accumulation
- P2463Diesel Particulate Filter Restriction — Soot Accumulation
- P2464Diesel Particulate Filter Differential Pressure Too High
- P2465Diesel Particulate Filter Differential Pressure Sensor Range/Performance
- P2466Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
- P2467Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 3
- P2468Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3
- P2469Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3
- P246AExhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 3
- P246BVehicle Conditions Incorrect for Particulate Filter Regeneration
- P246CParticulate Filter Restriction Forced Limited Power Bank 1
- P246DParticulate Filter Pressure Sensor A and B Correlation
- P246EExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4
- P246FReductant System Cold Start Performance
- P2470Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 3
- P2471Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
- P2472Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P2473Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3
- P2474Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 4
- P2475Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4
- P2476Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4
- P2477Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 4
- P2478Exhaust Gas Temperature Out of Range Bank 1 Sensor 1
- P2479Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
- P247AExhaust Gas Temperature Out of Range Bank 1 Sensor 3
- P247BExhaust Gas Temperature Out of Range Bank 1 Sensor 4
- P247CExhaust Gas Temperature Out of Range Bank 2 Sensor 1
- P247DExhaust Gas Temperature Out of Range Bank 2 Sensor 2
- P247EExhaust Gas Temperature Out of Range Bank 2 Sensor 3
- P247FExhaust Gas Temperature Out of Range Bank 2 Sensor 4
- P2480Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
- P2481Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5
- P2482Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
- P2483Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 1 Sensor 5
- P2484Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 5
- P2485Exhaust Gas Temperature Sensor Circuit Open Bank 2 Sensor 5
- P2486Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 5
- P2487Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5
- P2488Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 5
- P2489Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 5
- P248AReductant Heater A Sense Circuit Low
- P248BReductant Heater A Sense Circuit High
- P248CReductant Heater B Sense Circuit Low
- P248DReductant Heater B Sense Circuit High
- P248EEGR Cooler Bypass Control Circuit Open Bank 2
- P248FEGR Cooler Bypass Control Circuit Range or Performance Bank 2
- P2490EGR Cooler Bypass Control Circuit Low Bank 2
- P2491EGR Cooler Bypass Control Circuit High Bank 2
- P2492EGR Cooler Bypass Position Sensor Circuit Bank 1
- P2493EGR Cooler Bypass Position Sensor Range or Performance Bank 1
- P2494EGR Cooler Bypass Position Sensor Circuit Low Bank 1
- P2495EGR Cooler Bypass Position Sensor Circuit High Bank 1
- P2496EGR Cooler Bypass Position Sensor Circuit Intermittent or Erratic Bank 1
- P2497EGR Cooler Bypass Position Sensor Circuit Bank 2
- P2498EGR Cooler Bypass Position Sensor Range or Performance Bank 2
- P2499EGR Cooler Bypass Position Sensor Circuit Low Bank 2
- P249AEGR Cooler Bypass Position Sensor Circuit High Bank 2
- P249BEGR Cooler Bypass Position Sensor Circuit Intermittent or Erratic Bank 2
- P249CExcessive Time To Enter Closed Loop Reductant Injection Control
- P249DClosed Loop Reductant Injection Control At Limit Flow Too Low
- P249EClosed Loop Reductant Injection Control At Limit Flow Too High
- P249FExcessive Time To Enter Closed Loop Particulate Filter Regeneration Control
- P24A0Closed Loop Particulate Filter Regeneration Control At Limit Temperature Too Low
- P24A1Closed Loop Particulate Filter Regeneration Control At Limit Temperature Too High
- P24A2Particulate Filter Regeneration Incomplete Bank 1
- P24A3Particulate Filter Restriction Soot Accumulation Bank 2
- P24A4Particulate Filter Restriction Soot Accumulation Too High Bank 1
- P24A5EGR Cooler Bypass Control Stuck Open Bank 1
- P24A6EGR Cooler Bypass Control Stuck Open Bank 2
- P24A7EGR Cooler Coolant Pump Control Circuit Open
- P24A8EGR Cooler Coolant Pump Performance Stuck Off
- P24A9EGR Cooler Coolant Pump Control Circuit Low
- P24AAEGR Cooler Coolant Pump Control Circuit High
- P24ABEGR Cooler Coolant Pump Stuck On
- P24ACEGR Cooler Coolant Pump Feedback Circuit Low
- P24ADEGR Cooler Coolant Pump Feedback Circuit High
- P24AEParticulate Matter Sensor Circuit
- P24AFParticulate Matter Sensor Circuit Range or Performance
- P24B0Particulate Matter Sensor Circuit Low
- P24B1Particulate Matter Sensor Circuit High
- P24B2Particulate Matter Sensor Circuit Intermittent
- P24B3Particulate Matter Sensor Heater Control Circuit Open
- P24B4Particulate Matter Sensor Heater Control Circuit Range or Performance
- P24B5Particulate Matter Sensor Heater Control Circuit Low
- P24B6Particulate Matter Sensor Heater Control Circuit High
- P24B7Particulate Matter Sensor Heater Resistance
- P24B8EVAP System Leak Detection Pump Pressure Sensor Circuit
- P24B9EVAP System Leak Detection Pump Pressure Sensor Circuit Range or Performance
- P24BAEVAP System Leak Detection Pump Pressure Sensor Circuit Low
- P24BBEVAP System Leak Detection Pump Pressure Sensor Circuit High
- P24BCEVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent
- P24BDEVAP System Leak Detection Pump Switching Valve Control Circuit Open
- P24BEEVAP System Leak Detection Pump Switching Valve Control Circuit Low
- P24BFEVAP System Leak Detection Pump Switching Valve Control Circuit High
- P24C0EVAP System Leak Detection Pump Switching Valve Stuck On
- P24C1EVAP System Leak Detection Pump Switching Valve Performance Stuck Off
- P24C2Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 1
- P24C3Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 2
- P24C4EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1
- P24C5EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 2
- P24C6Particulate Matter Sensor Temperature Circuit
- P24C7Particulate Matter Sensor Temperature Circuit Range or Performance
- P24C8Particulate Matter Sensor Temperature Circuit Low
- P24C9Particulate Matter Sensor Temperature Circuit High
- P24CAParticulate Matter Sensor Temperature Circuit Intermittent
- P24CBReductant Tank Cap Switch Circuit
- P24CCReductant Tank Cap Switch Circuit Range or Performance
- P24CDReductant Tank Cap Switch Circuit Low
- P24CEReductant Tank Cap Switch Circuit High
- P24CFReductant Tank Cap Switch Circuit Intermittent or Erratic
- P24D0Particulate Matter Sensor Supply Voltage Circuit Low
- P24D1Particulate Matter Sensor Regeneration Incomplete
- P24D2Reductant Heater A Sense Circuit
- P24D3Reductant Heater B Sense Circuit
- P24D4EGR Cooler Coolant Pump Feedback Circuit
- P24D5EVAP System Pressure Sensor or Switch B Circuit
- P24D6EVAP System Pressure Sensor or Switch B Circuit Range or Performance
- P24D7EVAP System Pressure Sensor or Switch B Circuit Low
- P24D8EVAP System Pressure Sensor or Switch B Circuit High
- P24D9EVAP System Pressure Sensor or Switch B Circuit Intermittent
- P24DAParticulate Matter Sensor Exhaust Sample Error Bank 1
- P24DBReductant Purge Control Valve B Circuit Open
- P24DCReductant Purge Control Valve B Performance
- P24DDReductant Purge Control Valve B Circuit Low
- P24DEReductant Purge Control Valve B Circuit High
- P24DFReductant Purge Control Valve B Stuck Open
- P24E0Reductant Purge Control Valve B Stuck Closed
- P24E1NH3 Sensor Circuit
- P24E2NH3 Sensor Circuit Range or Performance
- P24E3NH3 Sensor Circuit Low
- P24E4NH3 Sensor Circuit High
- P24E5NH3 Sensor Circuit Intermittent/Erratic
- P24E6NH3 Sensor Heater Circuit/Open
- P24E7NH3 Sensor Heater Circuit Low
- P24E8NH3 Sensor Heater Circuit High
- P24E9NH3 Sensor Heater Circuit Performance
- P24EANH3 Sensor Supply Voltage Circuit
- P24EBNH3 Sensor Supply Voltage Circuit Low
- P24ECNH3 Sensor Supply Voltage Circuit High
- P24EDNH3 Sensor Calibration Memory
- P24EENH3 Sensor Processor Performance
- P24F2EGR Temperature/Charge Air Cooler Temperature Correlation
- P24F3Reductant Tank Temperature/Fuel Temperature Correlation
- P24F4NOx Sensor Delayed Response - High to Low Bank 1 Sensor 1
- P24F5NOx Sensor Delayed Response - High to Low Bank 1 Sensor 2
- P24F6Exhaust Aftertreatment Fuel Air Purge Valve Stuck Open
- P24F7Exhaust Aftertreatment Fuel Air Purge Valve Stuck Closed
- P24F8Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit
- P24F9Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Range/Performance
- P24FAExhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low
- P24FBExhaust Aftertreatment Fuel Air Purge Valve Control Circuit High
- P24FCParticulate Matter Sensor Heater Control Circuit Driver Current/Temperature Too High
- P24FDParticulate Filter A Incorrect
- P24FESCR Catalyst Incorrect
- P24FFReductant Temperature Too High
P25xx
9 codes
- P2569Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low
- P2570Direct Ozone Reduction Catalyst Temperature Sensor Circuit High
- P2571Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic
- P2572Direct Ozone Reduction Catalyst Deterioration Sensor Circuit
- P2573Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/Performance
- P2574Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low
- P2575Direct Ozone Reduction Catalyst Deterioration Sensor Circuit High
- P2576Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/Erratic
- P2577Direct Ozone Reduction Catalyst Efficiency Below Threshold
P26xx
9 codes
- P260EParticulate Filter Regeneration Lamp Control Circuit
- P260FEVAP System Monitoring Processor Performance
- P263DReductant Heater Driver Performance
- P2697Exhaust Aftertreatment Fuel Injector A Circuit / Open
- P2698Exhaust Aftertreatment Fuel Injector A Performance
- P2699Exhaust Aftertreatment Fuel Injector A Circuit Low
- P269AExhaust Aftertreatment Fuel Injector A Circuit High
- P26FBEGR Cooler Bypass Control Stuck Closed Bank 1
- P26FCEGR Cooler Bypass Control Stuck Closed Bank 2
P28xx
5 codes
P2Axx
21 codes
- P2AA3Cold Start EGR B Flow Insufficient Detected
- P2AA4Cold Start EGR B Flow Excessive Detected
- P2AA5EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 1
- P2AA6EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 2
- P2AB0Particulate Matter Sensor Processor Performance
- P2AB1Catalyst Heater Control Module Performance
- P2AB2Catalyst Heater Control Module Supply Voltage
- P2ACCReductant Temperature Sensor B Circuit
- P2ACDReductant Temperature Sensor B Range/Performance
- P2ACEReductant Temperature Sensor B Circuit Low
- P2ACFReductant Temperature Sensor B Circuit High
- P2AD0Reductant Temperature Sensor B Circuit Intermittent/Erratic
- P2AD6Reductant Pump Motor Position Sensor Circuit
- P2AD7Reductant Pump Motor Position Sensor Range/Performance
- P2AD8Reductant Pump Motor Position Sensor Circuit Low
- P2AD9Reductant Pump Motor Position Sensor Circuit High
- P2ADAReductant Tank Temperature Sensor B Range/Performance
- P2ADBReductant Tank Temperature Sensor B Circuit Low
- P2ADCReductant Tank Temperature Sensor B Circuit High
- P2ADDReductant Tank Temperature Sensor B Circuit Intermittent/Erratic
- P2ADEReductant Tank Temperature Sensor B Circuit
P2Bxx
24 codes
- P2B7AEVAP System Pressure Sensor/Switch C Circuit
- P2B7BEVAP System Pressure Sensor/Switch C Circuit Range/Performance
- P2B7CEVAP System Pressure Sensor/Switch C Circuit Low
- P2B7DEVAP System Pressure Sensor/Switch C Circuit High
- P2B7EEVAP System Pressure Sensor/Switch C Circuit Intermittent
- P2B97Exhaust Pressure Control Valve A Position Exceeded Learning Limit
- P2B98Exhaust Pressure Control Valve A Supply Low
- P2B99Exhaust Pressure Control Valve A Driver Current/Temperature Too High
- P2B9AReductant Quality Sensor Circuit Intermittent/Erratic
- P2B9BVehicle Conditions Incorrect for Particulate Matter Sensor Regeneration
- P2BA4Catalyst Feedgas Performance
- P2BA5Particulate Filter Feedgas Performance
- P2BA6NOx Exceedance - SCR NOx Catalyst Performance
- P2BA7NOx Exceedence - Empty Reagent Tank
- P2BA8NOx Exceedence - Interruption of Reagent Dosing Activity
- P2BA9NOx Exceedence — Insufficient Reagent
- P2BAANOx Sensor Range/Performance (Bank 1, Sensor 1)
- P2BABNOx Exceedence — Reagent System Performance
- P2BACNOx Exceedence - Insufficient Reagent Quality
- P2BADNOx Exceedence - Insufficient Reagent Consumption
- P2BAENOx Exceedence - EGR System
- P2BAFNOx Sensor Heater Sense Circuit Range/Performance Bank 1 Sensor 1
- P2BD2Exhaust Aftertreatment System A Leak
- P2BD3Exhaust Aftertreatment System B Leak
P2Cxx
25 codes
- P2C11Reductant Pump A Current Too Low
- P2C32Crankcase Pressure Sensor B Circuit
- P2C33Crankcase Pressure Sensor B Circuit Range/Performance
- P2C34Crankcase Pressure Sensor B Circuit Low
- P2C35Crankcase Pressure Sensor B Circuit High
- P2C36Crankcase Pressure Sensor B Circuit Intermittent/Erratic
- P2C79NOx Adsorber - Sulfur Limit Exceeded
- P2C7ASCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 2
- P2C90Crankcase Ventilation System - Hose A Disconnected
- P2C91Crankcase Ventilation System - Hose B Disconnected
- P2CA4Particulate Filter Pressure Sensor Signals Swapped A/B
- P2CBDPCV Heater "B" Control Circuit /Open
- P2CBEPCV Heater "B" Control Circuit High
- P2CBFPCV Heater "B" Control Circuit Low
- P2CC0PCV Heater "B" Performance
- P2CE5Particulate Filter Pressure Sensor C Circuit
- P2CE6Particulate Filter Pressure Sensor C Range/Performance
- P2CE7Particulate Filter Pressure Sensor C Circuit Low
- P2CE8Particulate Filter Pressure Sensor C Circuit High
- P2CE9Particulate Filter Pressure Sensor C Circuit Intermittent/Erratic
- P2CEAParticulate Filter Pressure Sensor D Circuit
- P2CEBParticulate Filter Pressure Sensor D Range/Performance
- P2CECParticulate Filter Pressure Sensor D Circuit Low
- P2CEDParticulate Filter Pressure Sensor D Circuit High
- P2CEEParticulate Filter Pressure Sensor D Circuit Intermittent/Erratic
P2Dxx
12 codes
- P2D1CCold Start EGR A/B Ratio Performance
- P2D1DReductant System Leak Detected – Small Leak
- P2D1EReductant System Leak Detected – Large Leak
- P2D1FReductant System Flow – Restricted
- P2D20Reductant System Flow – Blocked
- P2D45Reductant Temperature Too Low
- P2D5AReductant Level Sensor A/B Correlation
- P2DCDParticulate Filter B Incorrect
- P2DD9EVAP System Leak Detection Pump Control Circuit Performance
- P2DDAEVAP System Leak Detection Pump Performance/Stuck Off
- P2DDBEVAP System Leak Detection Pump Stuck On
- P2DFDEVAP System Purge Pump Performance
P2Exx
16 codes
- P2E54Exhaust Pressure Sensor C Circuit
- P2E55Exhaust Pressure Sensor C Circuit Range/Performance
- P2E56Exhaust Pressure Sensor C Circuit Low
- P2E57Exhaust Pressure Sensor C Circuit High
- P2EA1Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 6
- P2EA2Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 6
- P2EA3Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 6
- P2EA5Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 6
- P2EADReductant Metering Unit 2 Performance
- P2EAEReductant Injection Valve Circuit Range/Performance Bank 1 Unit 2
- P2EAFReductant Injection Valve Stuck Closed Bank 1 Unit 2
- P2EB9Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 2
- P2EBBCrankcase Temperature Sensor Circuit
- P2EBCCrankcase Temperature Sensor Circuit Range/Performance
- P2EBDCrankcase Temperature Sensor Circuit High
- P2EBECrankcase Temperature Sensor Circuit Low
Code data: OBDex (CC0) · severity bars are our rating (low · moderate · urgent)
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