2021 Ford Bronco Base, 4D Utility, 2.3L Eng VIN H, Part Time T/Case ControlFACTORY OEM SERVICE PROCEDURE

P0463 - Fuel Level Sensor A Circuit High

DTC DESCRIPTION P0463 - FUEL LEVEL SENSOR A CIRCUIT HIGH

Description:  This DTC sets when the FLI signal is greater than the maximum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank.
Possible Causes: 
  • Overfilled fuel tank
  • Fuel pump (FP) module concern
  • Incorrectly installed fuel gauge
  • Damaged instrument panel cluster (IPC)
  • Damaged fuel gauge
Diagnostic Aids:  Monitor the FLI PIDs in ignition ON, engine running. A concern is present if the FLI percentage PID is at 25% fill and the FLI voltage PID is less than 0.90 volt with a non-matching fuel gauge or the FLI percentage PID is at 75% fill and the FLI voltage PID is greater than 2.45 volts with a non-matching fuel gauge.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HX.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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