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 PCM goes above a calculated value.

Theory of Operation:
The voltage at the fuel level sending unit sends a variable voltage to the powertrain control module to indicate fuel level. The purpose of this feature is to prevent false setting of misfire and fuel systems monitor codes when the vehicle is operating at low fuel levels.

Possible Causes:
- Open sensor signal circuit
- Fuel level sending unit failure
- Instrument cluster printed circuit board failure
- Powertrain control module failure
- Connector wires
- Connector terminals