Jeep Trouble Codes and Known Issues

Jeep (Stellantis) shares engines and electronics with Dodge and Chrysler. The 3.6 Pentastar V6 has been very common since 2011, and the EVAP system uses its own leak detection unit (NVLD or ESIM) that generates many questions.

Most searched models: Grand Cherokee, Cherokee, Wrangler, Compass, Renegade, Liberty and Commander.

Common problems on Jeep vehicles

• Plastic oil filter housing on the Pentastar, with leaks that affect the oil pressure sensor.
• Totally Integrated Power Module (TIPM) on some Grand Cherokee years: assorted electrical faults and U codes.
• EVAP leak detection unit (NVLD or ESIM).
• Left cylinder head on some 2011 and 2012 Pentastar engines, with misfires and noise, covered by warranty at the time.

Tips for diagnosing a Jeep

• If assorted electrical codes appear at once, suspect the TIPM or the grounds before replacing sensors.
• On the Pentastar, look for oil leaks at the top of the engine (oil filter housing).

Do you have several codes at once? Use the free multi-code diagnosis for Jeep: it sorts the codes by priority and shows these make-specific notes. Below are the codes with documented quirks on Jeep vehicles.

Make notes are a guide based on well-known common failures. Always confirm with the manufacturer's documentation for your engine and model year.