P0138 Oxygen sensor circuit high voltage Bank 1 Sensor 2
Sensor 2 is for the catalytic convertor monitor sensor, or the downstream 02 sensor, when there is a circuit high code this mean there is a failed connection either at the sensor or internal of the sensor
Here a 02 sensor that set a P0138, P0138 mean there is a failed connection looking at the connection there was electrical tape on the connection, where there should not have been
Unravel the tape and there was the cause, unfortunately the owner failed to make a proper connection which lead to P0138,
36.2k questions
32.2k answers
1.3k comments
22.8k users