P0462 Fuel Level Sending Unit Volts Too Low
NAME OF CODEFuel Level Sending Unit Volts Too Low
WHEN MONITORED
Ignition on and battery voltage above 10.4 volts.
SET CONDITION
The fuel level sensor signal voltage goes below 0.4 volts for more than 90 seconds.
THEORY OF OPERATION
The Fuel Level Sending Unit (Fuel Level Sensor) 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 fuel levels.
POSSIBLE CAUSES
- Sensor signal circuit shorted to ground
- Defective fuel level sensor
- Powertrain control module