DTC P0130 Or DTC P0136: Notes
Code Definition
- DTC P0130: Front Heated Oxygen Sensor (HO2S) Circuit Malfunction
- DTC P0136: Rear Heated Oxygen Sensor (HO2S) Circuit Malfunction
NOTE:
There is a front HO2S before and a rear HO2S after the catalytic converter. The front HO2S measures oxygen content of exhaust gases and is used to control air/fuel mixture. The rear HO2S is used to determine the efficiency of the catalytic converter. ECM calculates catalytic converter efficiency by comparing front and rear HO2S signals.