Conditions Which Generate This Code:
The ECM detects the following conditions:
• The signal voltage from the fuel temperature sensor is greater than 4.9 VDC for more than eight seconds.
• Engine coolant temperature is above ?10 C (15.0 F).
• The ECM has been powered for at least two seconds.
System Response:
The ECM will default to the lower of engine coolant temperature or 50 C (122.0 F) for fuel temperature.
“DIAG” will be displayed next to the status for “Fuel Temperature” on the electronic service tool.
Possible Performance Effect:
None
Troubleshooting:
Perform the following diagnostic procedure: “Engine Temperature Sensor Open or Short Circuit – Test”
Results:
• OK – STOP.
