P0136
Fix code P0136
Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2). This sensor is located on the engine bank that houses #1 cylinder and is located AFTER the catalytic converter
When you turn the ignition switch to RUN, power is provided to the heater circuit of the oxygen sensor. The heater gets its ground from the PCM so it can monitor heater operation. If the heater doesn’t return ground to the PCM, it sets trouble code P0136
Most common causes are: Blown fuse, short to ground, dead heater in sensor, bad ground wire between sensor and PCM.
To learn how to replace an oxygen sensor, click here
© 2012 Rick Muscoplat
Posted on by Rick Muscoplat
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