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Home › Jeep › 2008 › Compass Limited, AWD, Standard › Repair and Diagnosis › Engine Performance › System › DTCS P000A To P0121, Checking Charging System › P0031-O2 Sensor 1/1 Heater Circuit Low › Set Conditions

Set Conditions

Set Condition:
The PCM detects that the Oxygen Sensor 1/1 heater control circuit is shorted low.