OBD-II code · Powertrain (generic, extended)
P2A4F Alternative Fuel Temperature Sensor Circuit Intermittent/Erratic
The alternative fuel temperature sensor signal drops out or jumps intermittently. Loose connector or noisy ground.
Is it safe to drive with P2A4F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
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
- P2A4CAlternative Fuel Temperature Sensor Range/Performance
- P2A4DAlternative Fuel Temperature Sensor Circuit Low
- P2A4EAlternative Fuel Temperature Sensor Circuit High
- P2A50Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit
- P2A51Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/Performance
- P2A52Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.