OBD-II code · Powertrain (generic)
P01FA Turbocharger Outlet Pressure Sensor B Circuit
Generic electrical fault on turbocharger outlet pressure sensor B (second turbo or second measurement location).
Is it safe to drive with P01FA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- 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
- Turbo Outlet Pressure Sensor B, Sensor Wiring
Related codes
- P00F8Turbocharger Outlet Pressure Sensor A Circuit
- P01F7O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 4
- P01F8Engine Coolant Heater A Control Circuit Driver Current/Temperature Too High
- P01F9Engine Coolant Heater B Control Circuit Driver Current/Temperature Too High
- P01FBTurbocharger Outlet Pressure Sensor B Range/Performance
- P01FCTurbocharger Outlet Pressure Sensor B Circuit Low
- P01FDTurbocharger Outlet Pressure Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.