Possible Causes
| Possible Causes |
|---|
| INTAKE O2 SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| INTAKE O2 SENSOR CURRENT CONTROL CIRCUIT OPEN OR HIGH RESISTANCE |
| INTAKE O2 SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE |
| INTAKE O2 SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .