Possible Causes
| Possible Causes |
|---|
| (F856) 5 VOLT SUPPLY CIRCUIT HIGH RESISTANCE |
| (K34) EGR SIGNAL CIRCUIT HIGH RESISTANCE |
| (K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE |
| (Z902) GROUND CIRCUIT HIGH RESISTANCE |
| (K35) EGR CONTROL CIRCUIT HIGH RESISTANCE |
| EGR VALVE ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .