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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P2AF6 To U0428 >> Diagnosis And Testing >> U0109-Lost Communication With Fuel Pump Control Module >> Default Action

Default Action

The table below shows the FPCM DTCs and the correlating INTENDED failure modes. NOTE: The faults may not always set as expected which may lead to a misdiagnosis. Therefore, it is usually best to perform the Complete Fuel Pump Control Module System Diagnostics in the diagnostic information. 

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