2019 Jeep Wrangler power train problems

“On [XXX], my 2019 Jeep Wrangler Unlimited Rubicon (2.0L turbo) caught fire in the engine compartment while driving, at approximately 101,437 miles. The fire started near the turbocharger and heat shield area. There were no injuries, but the vehicle was moving on a public road with four occupants, including two young children in car seats in the rear, when the fire started. The vehicle had been returned to me four days earlier, after approximately 2.5 months at Preferred Chrysler Dodge Jeep of Muskegon, MI for a timing chain replacement. After the fire, I found that the coolant reservoir hose had come off its fitting, and the hose barb appears to have been broken and the hose pushed back on. Several under-hood trim fasteners were also missing. My best assessment is that coolant sprayed onto the hot turbo/exhaust components and ignited. The vehicle has not been altered since the fire and is available for inspection at Watson's in Ludington, MI. I reported the fire to the manufacturer. They directed me to take it to the local dealer, then instructed the dealer not to inspect or work on it. The case was escalated internally, but as of 10/15/2026 no manufacturer…”

“The 48-Volt Lithium-Ion eTorque Hybrid Battery Pack (Mopar Power Pack Unit/PPU) on my 2019 Jeep Wrangler Sahara Unlimited (~55K miles) failed. The failed component may be available on video by the dealership. Check engine light first appeared early XXX. Earliest dealership appointment was late August 2026. At that visit, dealer diagnosed DTCs P0A94 (recurring, including P0A94-03) and U0412, and performed a software update flashing the BPCM (Battery Pack Control Module) firmware from 05057870AN to 05057870AV per a Technical Service Bulletin. This was covered under warranty at no charge; vehicle was returned to me. Days later, the check engine light returned along with a battery warning light and additional indicators, including ABS among others I could not fully identify. The vehicle then lost power and stopped running while in the roadway, disabled in an active lane of travel — a safety hazard to myself and surrounding traffic. Vehicle was towed to the dealership XXX. On this second visit, the dealership attributed the failure to moisture exposure and corrosion at the PPU connector/harness, denied warranty coverage, and charged me $4,561.90. I received the…”

“VEHICLE & INCIDENT: 2019 Jeep Wrangler JL 2.0L Turbo. While climbing an extended grade on Hwy 87, vehicle experienced a sudden sluggish throttle anomaly and rapid coolant temperature spike from ~215F to 255F under load. Vehicle was pulled off and shut down within ~20 seconds. SUSPECTED FAILURE MODE & UNDERHOOD FIRE: Upon opening the hood, pressurized coolant had sprayed across the engine bay from a split in the smaller rubber hose branch of the engine coolant outlet assembly (Mopar PN 68280797AC). The hose split longitudinally ~13mm with the center ~32mm from the hose end. The vehicle is equipped with a Baja Designs T-Fitting to replace 68280784A The hot, pressurized coolant sprayed directly onto the exposed, center section of the turbocharger between the compressor and turbine sections and on the turbine section itself. The coolant is suspected to have flash-ignited on contact with the turbo, creating an active under hood fire that began spreading to the hood insulation liner. The fire was successfully doused roadside with water, preventing a total vehicle burn-down. No other fuel sources were noted and the lines to the turbocharger were intact and did not…”

“The 48V eTorque Power Pack Unit (PPU), BPCM, and associated cables failed on my 2019 Jeep Wrangler, causing the vehicle to stall and lose all acceleration while driving on the highway. All components are available for inspection upon request. In June 2025, a non-Jeep service center identified stored diagnostic code P0A9C-00 (48V hybrid battery temperature sensor circuit performance failure) along with multiple low voltage codes in the power steering system. The technician noted the issue needed to be addressed by an authorized Jeep dealer, as there was insufficient information to perform a repair on the 48V hybrid system. In September 2025, while driving on the highway, the engine stalled and the vehicle completely lost acceleration and would not restart. The vehicle required towing to an authorized Jeep dealer. A sudden and unexpected loss of acceleration and engine stall on a highway creates an extreme risk of rear-end collision and potential serious injury or fatality to the driver and other motorists. The problem was confirmed by an authorized FCA/Jeep dealer who found the same diagnostic code P0A9C-00, along with corrosion buildup on the 48V connector pins…”

“In June 2025, I had the clutch recall (NHTSA 23V-116) performed on my 2019 Jeep Wrangler at AutoNation Jeep Southwest in Littleton Colorado. Prior to this recall repair, the vehicle had no transmission faults or warning lights. Following the recall work, I began experiencing a recurring 'Service Transmission' warning. On a return visit, the dealership discovered they had incorrectly reinstalled the shifter cables during the recall repair, making it difficult to shift into first gear. The cables were redone. The 'Service Transmission' warning continued after the cable rework. The dealership performed a software flash on a subsequent visit, which did not resolve the issue. The vehicle later experienced a 'Service Transmission' warning accompanied by a clutch overheat alert and limp mode activation. The dealership has since diagnosed fault codes P082C and P082F (gear lever position sensor circuit high) and is recommending a transmission range sensor replacement at my expense. The dealership has acknowledged they cannot confirm the root cause of these codes. When I contacted Jeep Customer Care, they called the dealership and accepted their assessment that the issue…”

“Jeep engine stopped running while driving on high way 20.Had to coast to stop in middle of side street.Jeep did start back up but would not go into drive until an hour of trying to get it into gear.Drove it home.Next morning I started jeep but would not go into drive.It was stuck in park.”