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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (3.6L - DTCS P2138 To U1418) >> Diagnosis And Testing >> P2271-O2 Sensor 1/2 Signal Biased Rich >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

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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