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2024
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ProMaster 2500 Base
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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 P2228 To P258B
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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 does not detect a rich to lean switch within a specific time period, during a decel fuel shutoff event.