Possible Causes
| Possible Causes |
|---|
| EGR CONTROL 1 CIRCUIT OPEN/HIGH RESISTANCE |
| EGR CONTROL 2 CIRCUIT OPEN/HIGH RESISTANCE |
| EGR CONTROL 1 CIRCUIT SHORTED TO VOLTAGE |
| EGR CONTROL 2 CIRCUIT SHORTED TO VOLTAGE |
| EGR VALVE ASSEMBLY |
| POWERTRAIN CONTROL MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .