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Home >> Jeep >> 2012 >> Liberty Limited, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 3.7L - DTCS P0016 To P0205 >> Diagnosis And Testing >> P0140-O2 Sensor 1/2 No Activity Detected >> Set Condition:

Set Condition:

The Powertrain Control Module (PCM) detects that the oxygen sensor signal switches from lean to rich less than 16 times within 20 seconds during monitoring. Two Trip Fault. Three good trips to turn off the MIL.