Possible Causes
| Possible Causes |
|---|
| (F856) 5-VOLT SUPPLY CIRCUIT HIGH RESISTANCE |
| (K34) EGR SIGNAL CIRCUIT HIGH RESISTANCE |
| (K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE |
| (Z904) GROUND CIRCUIT HIGH RESISTANCE |
| (K35) EGR CONTROL CIRCUIT HIGH RESISTANCE |
| (K34) EGR SIGNAL CIRCUIT SHORTED TO GROUND |
| EXHAUST GAS RECIRCULATION (EGR) VALVE |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .