Possible Causes
| Possible Causes |
|---|
| INTERMITTENT DTC |
| (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT SHORTED TO VOLTAGE |
| (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT SHORTED TO THE (A15) FUSED ASD RELAY OUTPUT CIRCUIT |
| (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT OPEN OR HIGH RESISTANCE |
| OXYGEN SENSOR |
| ENGINE CONTROL MODULE (ECM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.