42 Fuel Level Sending Unit Volts Too Low *

42 FUEL LEVEL SENDING UNIT VOLTS TOO LOW *

The fuel level sending unit is an input to the Powertrain Control Module (PCM) at pin 13. This input is used to detect low fuel quantity, and when low, disables the misfire monitor and fuel monitor to prevent falsely setting a misfire DTC or a fuel monitor DTC.

This Diagnostic Trouble Code (DTC) is stored when the voltage at pin 13 is less than minimum amount.

This malfunction could possibly be caused by problems with any of the following components:

- Fuel level sending unit
- Circuit between the PCM and fuel level sending unit (shorted)
- Circuit between the PCM and the junction to the fuel level gauge on the instrument cluster (open)
- Fuel level gauge (on instrument cluster)
- PCM

* This DTC will be added to the PCM's software during a mid-year running change.