Possible Causes
| Possible Causes |
|---|
| EGR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN/HIGH RESISTANCE |
| SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE |
| ENGINE RUNNING TOO RICH |
| ENGINE TEMPERATURE TOO LOW |
| EGR TEMPERATURE SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .