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2025
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Pacifica Plug-In Hybrid Select
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS P219A To P2317
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DTC Troubleshooting
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P2273 O2 Sensor 2/2 Signal Stuck Rich
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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.