Mike's Workshop Manuals
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Dodge and Ram
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2023
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ProMaster 2500
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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 P0335 To P0430
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DTC Troubleshooting
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P0401-EGR System Performance
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Set Condition
Set Condition
During a slight acceleration condition, the PCM turns on the EGR Valve and monitors the reaction of the fuel trim. If the expected reaction is not detected, a fault is set.