OBD-II code · Powertrain (generic)
P01A3 Alternative Fuel Rail Pressure Sensor Circuit
Generic electrical fault on alternative fuel rail pressure sensor.
Is it safe to drive with P01A3?
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
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Alt Fuel Rail Pressure Sensor, Sensor Wiring
Related codes
- P01A0Alternative Fuel Tank A Pressure Sensor Circuit Low
- P01A1Alternative Fuel Tank A Pressure Sensor Circuit High
- P01A2Alternative Fuel Tank A Pressure Sensor Circuit Intermittent/Erratic
- P01A4Alternative Fuel Rail Pressure Sensor Performance
- P01A5Alternative Fuel Rail Pressure Sensor Circuit Low
- P01A6Alternative Fuel Rail Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.