Possible Causes
| Possible Causes |
|---|
| LOW ENGINE COOLANT LEVEL |
| ENGINE COOLING SYSTEM TEMPERATURE TOO HIGH |
| LEAK IN THE EGR SYSTEM PLUMBING BETWEEN THE EGR VALVE AND THE EGR COOLER |
| ENGINE MECHANICAL CONDITION OR VACUUM LEAK/FUEL SYSTEM ISSUE CAUSING A LEAN CONDITION |
| EGR TEMPERATURE SENSOR |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .