Fuel Level Sending Unit Volts Too Low

NAME OF CODE
Fuel Level Sending Unit Volts Too Low

WHEN MONITORED
Ignition on and battery voltage above 10.4 volts.

SET CONDITION
The fuel level sensor signal circuit voltage at the Powertrain Control Module (PCM) goes below 0.2 volts for 4 seconds.

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 system monitor codes when the vehicle is operating at low levels.

POSSIBLE CAUSES
- Sensor signal circuit shorted to ground
- Fuel level sending unit failure
- Powertrain control module failure
- Connector wires
- Connector terminals