| DTC | Affected Circuit |
|---|---|
| P0130 | Heated Oxygen Sensor Circuit (Bank 1, Sensor 1) |
| P0150 | Heated Oxygen Sensor Circuit (Bank 2, Sensor 1) |
DTC IDENTIFICATION
| CAUTION | If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. |
Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block.
Circuit Description
The oxygen sensor monitors exhaust gas oxygen content and delivers an input signal to ECM. The ECM uses this input signal to determine fuel injection system operation. Sensors include heater.
DTC P0130 is set when bank No. 1, sensor No. 1 voltage remains at .35-.55 volt during idle, once engine is at normal operating temperature. DTC P0150 is set when bank No. 2, sensor No. 1 voltage remains at .35-.55 volt during idle, once engine is at normal operating temperature. Possible causes are
- Heated oxygen sensor.
- Fuel trim malfunction.