Front Oxygen Sensor

FRONT OXYGEN SENSOR* (FRONT O2S) (DTC: P0130)
The front O2S* is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The sensor has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1 volt in richer conditions to 0 volts in leaner conditions. The sensor signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1 volt to 0 volts.




A heater is used to activate the sensor on M/T models for California and A/T models.

*: Oxygen sensor (M/T models except for California)
Heated oxygen sensor (M/T models for California and A/T models)