OBD-II code · Powertrain (generic)
P01BF Fuel Rail Pressure Sensor Circuit Range/Performance Bank 2
Fuel rail pressure sensor on bank 2 reads implausibly compared to commanded pressure. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P01BF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor reading drifted
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Rail Pressure Sensor B2
Related codes
- P01BCEngine Oil Temperature Sensor B Circuit High
- P01BDEngine Oil Temperature Sensor B Circuit Intermittent/Erratic
- P01BEFuel Rail Pressure Sensor Circuit Bank 2
- P01C0Fuel Rail Pressure Sensor Circuit Low Bank 2
- P01C1Fuel Rail Pressure Sensor Circuit High Bank 2
- P01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.