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Home › Jeep › 2019 › Grand Cherokee Trackhawk › Repair and Diagnosis › Engine Performance › System › 6.2L - DTCS P0139 To P0440 › DTC Troubleshooting › P027A-Fuel Pump Module "B" Control Circuit/Open › Set Condition

Set Condition

The Duty Cycle command from the Powertrain Control Module (PCM) to the Fuel Pump Control Module (FPCM) 2 on the FPCM 2 PWM Control circuit is outside the calibrated threshold.