OBD-II code · Powertrain (generic, extended)
P2A4C Alternative Fuel Temperature Sensor Range/Performance
The alternative fuel temperature signal does not match plausibility checks against ambient and fuel-rail temperatures. Sensor drift.
Is it safe to drive with P2A4C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor characteristic drifted
- PossibleSensor mounting displaced from fluid path
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Temperature Sensor, Wiring Harness, Afcm
Related codes
- P2A49Alternative Fuel Tank C Pressure Sensor Circuit High
- P2A4AAlternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic
- P2A4BAlternative Fuel Temperature Sensor Circuit
- P2A4DAlternative Fuel Temperature Sensor Circuit Low
- P2A4EAlternative Fuel Temperature Sensor Circuit High
- P2A4FAlternative Fuel Temperature Sensor Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.