Possible Causes
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| O2 SENSOR HEATER OPERATION |
| EVAP PURGE SOLENOID OPERATION |
| O2 SENSOR SIGNAL CIRCUIT |
| O2 SENSOR RETURN CIRCUIT |
| OXYGEN (O2) SENSOR |
| MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR |
| ENGINE COOLANT TEMPERATURE (ECT) SENSOR |
| ENGINE MECHANICAL |
| FUEL FILTER/PRESSURE REGULATOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .