P2A56 — Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/Performance
The outlet temperature signal of alternative fuel vaporizer B does not match plausibility checks against fuel rail temperature and engine coolant temperature. Sensor drift.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Alt fuel vaporizer b outlet temp sensor
- Wiring harness
- Afcm
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Sensor characteristic drifted
- Sensor mounting displaced from fluid path
- Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
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.