Possible Causes
| Possible Causes |
|---|
| (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| (F856) 5-VOLT SUPPLY CIRCUIT OPEN |
| (K834) EGR SIGNAL CIRCUIT SHORTED TO GROUND |
| (K834) EGR SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (K834) EGR SIGNAL CIRCUIT |
| EGR POSITION SENSOR |
| PCM |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.