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Home >> Jeep >> 2021 >> Grand Cherokee Trackhawk >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 6.2L - DTCS P0153 To P0441 >> DTC Troubleshooting >> P027A-Fuel Pump Module "B" Control Circuit/Open >> Possible Causes

Possible Causes

Possible Causes
FPCM 2 PWM CONTROL CIRCUIT OPEN/HIGH RESISTANCE
FPCM 2 PWM CONTROL CIRCUIT SHORT TO GROUND
FPCM 2 PWM CONTROL CIRCUIT SHORT TO VOLTAGE
FUEL PUMP CONTROL MODULE 2
POWERTRAIN CONTROL MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .