P0463 Fuel Level Sending Unit Volts Too High

NAME OF CODE
Fuel Level Sending Unit Volts Too High

WHEN MONITORED
Ignition on.

SET CONDITION
The fuel level sensor signal circuit voltage at the BCM goes above 4.8 volts.

THEORY OF OPERATION
The voltage at the fuel level sending unit sends a variable voltage to the body control module to indicate fuel level. The purpose of this feature is to prevent false setting of misfire and fuel system monitor codes when the vehicle is operating at low fuel levels.

POSSIBLE CAUSES
- Open sensor signal circuit
- Fuel level sending unit failure
- Connector wires
- Connector terminals
- BCM Failure