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Home >> Chrysler >> 2014 >> 300 SRT-8 >> Repair and Diagnosis >> Engine Performance >> System >> 6.4L - DTCS P2128 To U1431 >> Diagnosis And Testing >> P2271-O2 Sensor 1/2 Signal Biased Rich >> Set Condition

Set Condition

The Powertrain Control Module (PCM) monitors the downstream O2 Sensor. If the PCM does not detect a rich to lean switch within a specific time during a decel fuel shutoff event, the monitor will fail. Two trip fault. Three good trips to turn off the MIL.

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