P0462

Diagnostic Chart:

Wiring Diagram:

Circuit Description

The Fuel Level sensor is an important input to the VCM for the Enhanced Evaporative System Diagnostic. The VCM needs the fuel level information in order to know the volume of fuel in the tank. The fuel level affects the rate of change in air pressure in the EVAP system. Several of the Enhanced Evaporative System Diagnostic sub-test are dependent upon correct fuel level information. The diagnostic will not run when the tank is greater than 85% or less than 15% full. (This sensor signal disables the misfire when the fuel levels are less than 15%). This DTC is a type D DTC.


Conditions for Setting the DTC

^ The Fuel Tank Slosh Test is completed.

^ The Fuel Tank Main Level Test is completed.

^ The Fuel Tank Level Data is valid.

^ The Fuel Level signal voltage is less than 0.39 volts for a period greater than 20 seconds.

Action Taken When the DTC Sets

The VCM will not turn on the Malfunction Indicator Lamp (MIL).

Conditions for Clearing the MIL/DTC

The VCM turns the MIL off after 3 consecutive driving trips without a fault condition present. A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles (coolant temperature has risen 40°F from the start-up coolant temperature and the engine coolant temperature exceeds 160°F during that same ignition cycle) or the scan tool clearing feature has been used.

Test Description

The numbers below refer to the step numbers in the diagnostic table.

4. This step checks the wiring, connections, and the VCM.

6. This step checks the wiring, connections, and the VCM.

8. This step checks the wiring, connections, and the VCM.