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Home › Chrysler › 2019 › Pacifica L, Gas › Repair and Diagnosis › Engine Performance › System › 3.6L - DTCS P2099 To P2B57 › DTC Troubleshooting › P2273-O2 Sensor 2/2 Signal Stuck Rich › Set Condition

Set Condition

The PCM detects that the Downstream O2 Sensor does not transition from a lean to rich condition within a specific time during a DFSO event.