Network · U codes · 119 codes
Communication bus
CAN/LIN bus circuit faults: shorts, opens and bus-off conditions.
Codes in this group
119
Generic SAE codes · OBDex
Rated urgent
66%
78 codes · our rating
DIY-friendly
0%
0 codes · per OBDex
Typical labor
$125–$750
Median hours × $125/hr · est.
01 —Start here
Codes to know in this group
- U0001High Speed CAN Communication BusOften: open circuit in CAN bus wiringUrgent$125–$1,000 labor est.
- U0003High Speed CAN Communication Bus (+) OpenOften: CAN-High wire broken or pin pushed backUrgent$125–$750 labor est.
- U0004High Speed CAN Communication Bus (+) LowOften: CAN-High shorted to groundUrgent$125–$625 labor est.
- U0005High Speed CAN Communication Bus (+) HighOften: CAN-High shorted to battery voltageUrgent$125–$750 labor est.
- U0006High Speed CAN Communication Bus (-) OpenOften: CAN-Low wire brokenUrgent$125–$750 labor est.
- U0007High Speed CAN Communication Bus (-) LowOften: CAN-Low shorted to groundUrgent$125–$625 labor est.
Code data: OBDex (CC0) · labor estimates at $125/hr, parts extra
02 —Full list
All 119 codes
Grouped by the first three characters of the code.
U00xx
116 codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus (-) Shorted to Bus (+)
- U0010Medium Speed CAN Communication Bus
- U0011Medium Speed CAN Communication Bus Performance
- U0012Medium Speed CAN Communication Bus (-) Open
- U0013Medium Speed CAN Communication Bus (-) Low
- U0014Medium Speed CAN Communication Bus (-) High
- U0015Medium Speed CAN Communication Bus (-) Shorted to Bus (+)
- U0016Medium Speed CAN Communication Bus Off
- U0017Medium Speed CAN Communication Bus (+) Open
- U0018Medium Speed CAN Communication Bus (+) Low
- U0019Medium Speed CAN Communication Bus (+) High
- U0020Low Speed CAN Communication Bus (+) Open
- U0021Low Speed CAN Communication Bus (+) Low
- U0022Low Speed CAN Communication Bus (+) High
- U0023Low Speed CAN Communication Bus (+) Shorted to Bus (-)
- U0024Low Speed CAN Communication Bus Off
- U0025Low Speed CAN Communication Bus (-) Open
- U0026Low Speed CAN Communication Bus (-) Low
- U0027Low Speed CAN Communication Bus (-) High
- U0028Vehicle Communication Bus A
- U0029Vehicle Communication Bus B
- U0030Powertrain Sensor Data Bus
- U0031Vehicle Communication Bus C (+) Open
- U0032Vehicle Communication Bus A (+) High
- U0033Vehicle Communication Bus A (-) Open
- U0034Vehicle Communication Bus A (-) Low
- U0035Vehicle Communication Bus A (-) High
- U0036Vehicle Communication Bus A (-) shorted to Bus A (+)
- U0037Vehicle Communication Bus B
- U0038Vehicle Communication Bus B Performance
- U0039Vehicle Communication Bus B (+) Open
- U0040Communication Bus Off
- U0041Vehicle Communication Bus B (+) High
- U0042Vehicle Communication Bus D (+) Open
- U0043Vehicle Communication Bus B (-) Low
- U0044Vehicle Communication Bus B (-) High
- U0045Vehicle Communication Bus B (-) shorted to Bus B (+)
- U0046Vehicle Communication Bus C
- U0047Vehicle Communication Bus C Performance
- U0048Vehicle Communication Bus C (+) Open
- U0049Vehicle Communication Bus C (+) Low
- U0050Vehicle Communication Bus E (+) Open
- U0051Vehicle Communication Bus C (-) Open
- U0052Vehicle Communication Bus C (-) Low
- U0053Vehicle Communication Bus C (-) High
- U0054Vehicle Communication Bus C (-) shorted to Bus C (+)
- U0055Vehicle Communication Bus D
- U0056Vehicle Communication Bus D Performance
- U0057Vehicle Communication Bus D (+) Open
- U0058Vehicle Communication Bus D (+) Low
- U0059Vehicle Communication Bus D (+) High
- U0060Vehicle Communication Bus F (+) Open
- U0061Vehicle Communication Bus D (-) Low
- U0062Vehicle Communication Bus D (-) High
- U0063Vehicle Communication Bus D (-) shorted to Bus D (+)
- U0064Vehicle Communication Bus E
- U0065Vehicle Communication Bus E Performance
- U0066Vehicle Communication Bus E (+) Open
- U0067Vehicle Communication Bus E (+) Low
- U0068Vehicle Communication Bus E (+) High
- U0069Vehicle Communication Bus E (-) Open
- U0070Communication Bus "B" Performance
- U0071Vehicle Communication Bus A (+) Bus Off
- U0072Vehicle Communication Bus A (-) Bus Off
- U0073Control Module Communication Bus "A" Off
- U0074Control Module Communication Bus "B" Off
- U0075Control Module Communication Bus "B" Performance
- U0076Control Module Communication Bus "C" Off
- U0077Vehicle Communication Bus B Off
- U0078Vehicle Communication Bus B (+) Open
- U0079Vehicle Communication Bus B (+) Low
- U007AControl Module Communication Bus H Off
- U007BControl Module Communication Bus I Off
- U007CControl Module Communication Bus J Off
- U007DControl Module Communication Bus K Off
- U007EControl Module Communication Bus L Off
- U007FControl Module Communication Bus M Off
- U0080Vehicle Communication Bus B (+) High
- U0081Vehicle Communication Bus F Performance
- U0082Vehicle Communication Bus F + Open
- U0083Vehicle Communication Bus F + Low
- U0084Vehicle Communication Bus F + High
- U0085Vehicle Communication Bus F - Open
- U0086Vehicle Communication Bus F - Low
- U0087Vehicle Communication Bus F - High
- U0088Vehicle Communication Bus F - Shorted to Bus F +
- U0089Vehicle Communication Bus G
- U008AVehicle Communication Bus G Performance
- U008BVehicle Communication Bus G (+) Open
- U008CVehicle Communication Bus G (+) Low
- U008DVehicle Communication Bus G (+) High
- U008EVehicle Communication Bus G (-) Open
- U008FVehicle Communication Bus G (-) Low
- U0090Vehicle Communication Bus G (-) High
- U0091CAN Communication Bus "C" Off
- U0092CAN Communication Bus "C" Performance
- U0093Vehicle Communication Bus H Performance
- U0094Vehicle Communication Bus H (+) Open
- U0095Vehicle Communication Bus H (+) Low
- U0096Vehicle Communication Bus H (+) High
- U0097Vehicle Communication Bus H (-) Open
- U0098Vehicle Communication Bus H (-) Low
- U0099Vehicle Communication Bus H (-) High
- U009AVehicle Communication Bus H (-) shorted to Bus H (+)
- U009BVehicle Communication Bus I
- U009CVehicle Communication Bus I Performance
- U009DVehicle Communication Bus J
- U009EVehicle Communication Bus J Performance
U01xx
1 code
U30xx
2 codes
Code data: OBDex (CC0) · severity bars are our rating (low · moderate · urgent)
03 —More