Alternative Fuel Temperature Sensor Range/Performance
The alternative fuel temperature signal does not match plausibility checks against ambient and fuel-rail temperatures. Sensor drift.
Affected components
- Alt fuel temperature sensor
- Wiring harness
- Afcm
Common causes
- High likelihood: Sensor characteristic drifted
- Medium likelihood: Sensor mounting displaced from fluid path
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.