2015 Jeep Wrangler Repair Guides

P0138 relates to an oxygen sensor malfunction in your 2015 Jeep Wrangler's exhaust system. The upstream sensors on Bank 1 monitor catalytic converter efficiency while downstream sensors check emissions. On 2018+ Wranglers with the 2.0L turbo PHEV, the O2 sensors also monitor hybrid battery ventilation.

P0140 relates to an oxygen sensor malfunction in your 2015 Jeep Wrangler's exhaust system. The upstream sensors on Bank 1 monitor catalytic converter efficiency while downstream sensors check emissions. On 2018+ Wranglers with the 2.0L turbo PHEV, the O2 sensors also monitor hybrid battery ventilation.

P0141 relates to an oxygen sensor malfunction in your 2015 Jeep Wrangler's exhaust system. The upstream sensors on Bank 1 monitor catalytic converter efficiency while downstream sensors check emissions. On 2018+ Wranglers with the 2.0L turbo PHEV, the O2 sensors also monitor hybrid battery ventilation.

The fuel system fault code P0148 affects your 2015 Wrangler's fuel delivery system. This could involve the high-pressure fuel pump on the 3.6L Pentastar, direct injectors on the 2.0L turbo, or the fuel level sender. On 4xe PHEV models, this also relates to the hybrid fuel system integration.

The ignition system fault code P0357 affects your 2015 Wrangler's spark delivery. On the 3.6L Pentastar, each cylinder has a dedicated ignition coil. The 2.0L turbo PHEV uses a different ignition system integrated with the hybrid motor. Off-road vibrations can loosen ignition components on Wranglers used for serious trails.

The ignition system fault code P0358 affects your 2015 Wrangler's spark delivery. On the 3.6L Pentastar, each cylinder has a dedicated ignition coil. The 2.0L turbo PHEV uses a different ignition system integrated with the hybrid motor. Off-road vibrations can loosen ignition components on Wranglers used for serious trails.

The camshaft position sensor fault code P0365 affects valve timing in your 2015 Wrangler's engine. The 3.6L Pentastar uses phasers on both camshafts for variable valve timing. The 2.0L turbo PHEV uses a different VVT system integrated with the hybrid motor. CMP faults affect fuel delivery and can cause no-start conditions.

The camshaft position sensor fault code P0366 affects valve timing in your 2015 Wrangler's engine. The 3.6L Pentastar uses phasers on both camshafts for variable valve timing. The 2.0L turbo PHEV uses a different VVT system integrated with the hybrid motor. CMP faults affect fuel delivery and can cause no-start conditions.

P0456 indicates an engine coolant temperature sensor issue in your 2015 Jeep Wrangler. The ECT sensor tells the PCM when the engine is at operating temperature. On the Wrangler, this affects the cooling fan operation, idle speed, and fuel mixture enrichment during warm-up. The 3.6L Pentastar has two ECT sensors for redundancy.

The fuel system fault code P0460 affects your 2015 Wrangler's fuel delivery system. This could involve the high-pressure fuel pump on the 3.6L Pentastar, direct injectors on the 2.0L turbo, or the fuel level sender. On 4xe PHEV models, this also relates to the hybrid fuel system integration.

The fuel system fault code P0461 affects your 2015 Wrangler's fuel delivery system. This could involve the high-pressure fuel pump on the 3.6L Pentastar, direct injectors on the 2.0L turbo, or the fuel level sender. On 4xe PHEV models, this also relates to the hybrid fuel system integration.

The fuel system fault code P0462 affects your 2015 Wrangler's fuel delivery system. This could involve the high-pressure fuel pump on the 3.6L Pentastar, direct injectors on the 2.0L turbo, or the fuel level sender. On 4xe PHEV models, this also relates to the hybrid fuel system integration.

P0550 indicates a power steering issue in your 2015 Jeep Wrangler. Electric power steering on JL and JT Wranglers monitors motor current to provide assist. On Rubicon models with upgraded tires and wheels, increased steering loads can stress the EPS system. Some owners experience faults after hitting obstacles that affect the steering linkage.

P0551 indicates a power steering issue in your 2015 Jeep Wrangler. Electric power steering on JL and JT Wranglers monitors motor current to provide assist. On Rubicon models with upgraded tires and wheels, increased steering loads can stress the EPS system. Some owners experience faults after hitting obstacles that affect the steering linkage.

P0552 indicates a power steering issue in your 2015 Jeep Wrangler. Electric power steering on JL and JT Wranglers monitors motor current to provide assist. On Rubicon models with upgraded tires and wheels, increased steering loads can stress the EPS system. Some owners experience faults after hitting obstacles that affect the steering linkage.

P0553 indicates a power steering issue in your 2015 Jeep Wrangler. Electric power steering on JL and JT Wranglers monitors motor current to provide assist. On Rubicon models with upgraded tires and wheels, increased steering loads can stress the EPS system. Some owners experience faults after hitting obstacles that affect the steering linkage.

The fuel system fault code P0629 affects your 2015 Wrangler's fuel delivery system. This could involve the high-pressure fuel pump on the 3.6L Pentastar, direct injectors on the 2.0L turbo, or the fuel level sender. On 4xe PHEV models, this also relates to the hybrid fuel system integration.

P0630 indicates an internal engine control module fault in your 2015 Jeep Wrangler. The PCM monitors its own memory, processing, and output circuits. On Wranglers with the 8HP45 transmission, the TCM may be integrated with or separate from the engine ECM. Module overheating from heavy loads or water intrusion can cause internal failures.

P0631 indicates an internal engine control module fault in your 2015 Jeep Wrangler. The PCM monitors its own memory, processing, and output circuits. On Wranglers with the 8HP45 transmission, the TCM may be integrated with or separate from the engine ECM. Module overheating from heavy loads or water intrusion can cause internal failures.

P0632 indicates an internal engine control module fault in your 2015 Jeep Wrangler. The PCM monitors its own memory, processing, and output circuits. On Wranglers with the 8HP45 transmission, the TCM may be integrated with or separate from the engine ECM. Module overheating from heavy loads or water intrusion can cause internal failures.

P0735 indicates an engine coolant temperature sensor issue in your 2015 Jeep Wrangler. The ECT sensor tells the PCM when the engine is at operating temperature. On the Wrangler, this affects the cooling fan operation, idle speed, and fuel mixture enrichment during warm-up. The 3.6L Pentastar has two ECT sensors for redundancy.

P0736 indicates an engine coolant temperature sensor issue in your 2015 Jeep Wrangler. The ECT sensor tells the PCM when the engine is at operating temperature. On the Wrangler, this affects the cooling fan operation, idle speed, and fuel mixture enrichment during warm-up. The 3.6L Pentastar has two ECT sensors for redundancy.

P0740 relates to the transmission system in your 2015 Jeep Wrangler. The 8HP45 8-speed automatic transmission found in JK, JL, and JT Wranglers uses complex valve bodies and clutch packs. On Rubicon models with the Rock-Trac transfer case, transmission faults can affect 4WD engagement. The 4xe PHEV uses a different transmission calibration.

P0741 relates to the transmission system in your 2015 Jeep Wrangler. The 8HP45 8-speed automatic transmission found in JK, JL, and JT Wranglers uses complex valve bodies and clutch packs. On Rubicon models with the Rock-Trac transfer case, transmission faults can affect 4WD engagement. The 4xe PHEV uses a different transmission calibration.

P1521 relates to the exhaust gas recirculation system in your 2015 Jeep Wrangler. The EGR system reduces NOx emissions by reintroducing exhaust gases into the combustion chamber. On the 3.6L V6, carbon buildup from stop-and-go off-road driving commonly causes EGR issues. The 4xe PHEV monitors EGR differently due to hybrid operation.

P1522 relates to the exhaust gas recirculation system in your 2015 Jeep Wrangler. The EGR system reduces NOx emissions by reintroducing exhaust gases into the combustion chamber. On the 3.6L V6, carbon buildup from stop-and-go off-road driving commonly causes EGR issues. The 4xe PHEV monitors EGR differently due to hybrid operation.

P1523 relates to the exhaust gas recirculation system in your 2015 Jeep Wrangler. The EGR system reduces NOx emissions by reintroducing exhaust gases into the combustion chamber. On the 3.6L V6, carbon buildup from stop-and-go off-road driving commonly causes EGR issues. The 4xe PHEV monitors EGR differently due to hybrid operation.

The communication fault code U0120 affects module-to-module data exchange in your 2015 Wrangler. Jeep's Uconnect system, ABS module, and powertrain control all communicate via the CAN bus. On 4xe PHEV models, the hybrid control module adds additional communication paths that can fail.

The communication fault code U0121 affects module-to-module data exchange in your 2015 Wrangler. Jeep's Uconnect system, ABS module, and powertrain control all communicate via the CAN bus. On 4xe PHEV models, the hybrid control module adds additional communication paths that can fail.

The communication fault code U0122 affects module-to-module data exchange in your 2015 Wrangler. Jeep's Uconnect system, ABS module, and powertrain control all communicate via the CAN bus. On 4xe PHEV models, the hybrid control module adds additional communication paths that can fail.