Possible Causes
| Possible Causes |
|---|
| EGR COLD HOSE LEAKING OR DAMAGED |
| CRANKCASE HOSE LEAKING OR DAMAGED |
| INTAKE MANIFOLD LEAK |
| PCV VALVE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .