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P0138 Diagnostic Trouble Code Discussion for June 2019

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage


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Trouble Ticket Help Requests for DTC P0138
Help Request Posted
2014 Chevrolet Spark LT 1.2L Cuts out VIN: KL8CD6S92E
P0138: downstream o2 voltage high. ... for an engine light and said would stumble and stall, pop the hood and has 2 new o2 sensors on it, only code stored was P0138. check the o2 voltages at idle on startup and both of them show 1.8 volts and as it slowly warms up the upstream does start s...
June 27, 2019