FixVault

Home › Jeep › 2019 › Renegade Trailhawk › Repair and Diagnosis › Engine Performance › System › 1.3L - DTCS P1E09 To U0121 › DTC Troubleshooting › P2271-O2 Sensor 1/2 Signal Biased Rich › Set Condition

Set Condition

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.