Possible Causes
| Possible Causes |
|---|
| INTERMITTENT DTC |
| (K243) O2 2/2 SIGNAL CIRCUIT SHORTED TO GROUND |
| (K904) O2 1/2 RETURN CIRCUIT SHORTED TO GROUND |
| (K243) O2 2/2 SIGNAL CIRCUIT SHORTED TO THE (K904) O2 1/2 RETURN CIRCUIT |
| 2/2 OXYGEN SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.