P0463 Fuel Level Sending Unit Volts Too High

SYMPTOM
P-0463 FUEL LEVEL SENDING UNIT VOLTS TOO HIGH

WHEN MONITORED
Ignition on.

SET CONDITION
The fuel level sensor signal circuit voltage at the PCM goes above 4.5 volts.

POSSIBLE CAUSES
- Fuel level sen sig ckt open (fuel tank to splice)
- Fuel level sensor ground circuit open
- Fuel level signal ckt wrg harn intermittent defect
- Fuel level signal ckt wrg harn observable defect
- Fuel level sensor defective
- PCM defective (fuel level sending unit)