Possible Causes
| Possible Causes |
|---|
| (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| (F856) 5-VOLT SUPPLY CIRCUIT OPEN |
| (K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO GROUND |
| (K34) EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (K34) EGR POSITION SENSOR SIGNAL CIRCUIT |
| EGR SOLENOID ASSEMBLY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .