OBD-II code · Powertrain (generic)
P01AA Alternative Fuel Tank Temperature Sensor Circuit
Generic electrical fault on alt fuel tank temperature sensor.
Is it safe to drive with P01AA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Alt Fuel Tank Temp Sensor, Sensor Wiring
Related codes
- P01A7Alternative Fuel Rail Pressure Sensor Circuit Intermittent/Erratic
- P01A8Alternative Fuel Rail/System Pressure - Too Low
- P01A9Alternative Fuel Rail/System Pressure - Too High
- P01ABAlternative Fuel Tank Temperature Sensor Range/Performance
- P01ACAlternative Fuel Tank Temperature Sensor Circuit Low
- P01ADAlternative Fuel Tank Temperature Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.