P0463

Diagnostic Chart:

Schematic:

The fuel level sensor is an important input to the control module for the enhanced evaporative system diagnostic. The fuel level information is needed for the ECM to know the volume of the fuel tank. The fuel level affects the rate of change in the air pressure in the EVAP system. The resistance across the sensor changes with the fuel level, varying the voltage drop across it. The ECM sets this DTC when the signal being received is higher than expected.

DTC PARAMETERS
This DTC will set when the signal from the fuel level sensor exceed 4.5 volts.

DTC P0463 is a (type D) DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem, use the Sean tool to monitor fuel level voltage with engine Off, ignition On.

Wiggling wires while monitoring fuel level voltage may locate where a short to voltage exists.