Fuel Gage Inaccurate or Inoperative (Dual Tanks)

Fuel Gage Inaccurate or Inoperative (Dual Tank)

Diagnostic Aids

* Verify that the fuel level is in the same range as the customer concern.
* For intermittent diagnosis, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics
* Refer to Fuel Level Specifications in order to verify the correct readings for the fuel level sensor. The Fuel Tank Level Remaining % parameter is available on the scan tool in the powertrain control module (PCM) Enhanced EVAP data list or the Fuel Level Sensor % parameter is available on the scan tool in the PCM Fuel data list - 6.6L diesel only.

Test Description

Step 1 - Step 5:

Step 6 - Step 13:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for a high resistance in the signal circuit and the low reference circuit of the fuel level sensor.
13. DTCs will set in the PCM when you perform this diagnostic table.