Possible Causes
| Possible Causes |
|---|
| INTERMITTENT DTC |
| (K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K902) O2 RETURN (UP) CIRCUIT SHORTED TO VOLTAGE |
| (K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO THE (K99) O2 1/1 HEATER CONTROL CIRCUIT |
| (K41) O2 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| (K902) O2 RETURN (UP) CIRCUIT OPEN OR HIGH RESISTANCE |
| 1/1 OXYGEN SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .