Possible Causes
| Possible Causes |
|---|
| (K141) O2 1/2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (K904) O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (K141) O2 1/2 SENSOR SIGNAL CIRCUIT OPEN |
| (K904) O2 RETURN DOWNSTREAM CIRCUIT OPEN |
| O2 SENSOR |
| PCM |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE ).