Possible Causes
WARNING: This page is about a different variant/trim than selected.
| Possible Causes |
|---|
| AIR FILTER |
| O2 SENSOR 1/1 SIGNAL CIRCUIT SHORTED TO GROUND |
| O2 SENSOR 1/1 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE |
| EXCESSIVE FUEL ENTERING THE AFTERTREATMENT/EXHAUST SYSTEM |
| MASS AIR FLOW SENSOR |
| ENGINE MISFIRE |
| FUEL DELIVERY SYSTEM FAILURE |
| INTAKE AIR SYSTEM LEAK |
| EXHAUST SYSTEM LEAK |
| EGR SYSTEM LEAK |
| O2 SENSOR |
| POWERTRAIN CONTROL MODULE |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .