Chrysler Pacifica fuel pump system issue with incorrect fuel level reading and recurring fuel filter failures on Chrysler Pacifica

Some Chrysler Pacifica owners report experiencing issues with incorrect fuel level readings, often associated with the P0463 OBDII trouble code, which indicates a malfunctioning fuel gauge due to a faulty fuel-sending unit or wiring harness problems. Additionally, some owners face recurring fuel filter failures, leading to engine misfires, sputtering, or hesitation during acceleration, which may signal insufficient fuel delivery from a failing fuel pump. A high-pitched whining noise after the fuel pump has primed can also indicate potential issues. To effectively address these problems, it is advised that owners confirm whether replacing the pump module will resolve the issue by checking the wiring and connectors before further inspection.