Question about Jeep Grand Cherokee
P0138 O2Sensor Circuit High Voltage (Bank #1 Sensor #2)
OK, usually if the sensor is not responding or has slow response, then it's the O2 sensor.
What does the O2 sensor that you took out look like? Plugged? Contaminated with a glaze of some sort?
Also, I would take it to an auto electrical shop that can see if the wiring to the O2 sensor is bad (not continuous).
Hope this helps..
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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