Possible Causes
WARNING: This page is about a different car, the 2023 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| EXCESSIVE FUEL PRESSURE OR POOR FUEL QUALITY/CONTAMINATION |
| FUEL INJECTOR LEAKING INTO ENGINE |
| LEAKING EVAP PURGE SOLENOID |
| ENGINE MECHANICAL - INTAKE SYSTEM RESTRICTED |
| EXHAUST SYSTEM RESTRICTION |
| FAULTY MAP SENSOR READING |
| O2 SENSOR WIRING ISSUE |
| OXYGEN (O2) SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .