P0461 Fuel Level Unit No Change Over Time
NAME OF CODEFuel Level Unit No Change Over Time
WHEN MONITORED
Ignition on and battery voltage above 10.4 volts.
SET CONDITION
The fuel level sensor signal voltage at the PCM stays between 9.56 volts and 9.90 volts for more than 255 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 systems monitor codes when the vehicle is operating at low fuel levels.
POSSIBLE CAUSES
- Defective fuel level sensor
- Obstructed/defective fuel tank
- Powertrain control module