Diagnostic Aids
- Ensure 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 Wiring Systems.
- Refer to Fuel Level Specifications in order to verify the correct fuel level sender readings. The fuel level is available on the scan tool in the Fuel Tank Level Remaining (%) parameter in the PCM Enhanced EVAP Data list-gas only or in the Fuel Level Sensor (voltage) parameter in the Engine Data Fuel System display - 6.6L diesel only.