OBD-II code · Powertrain (generic)
P01C1 Fuel Rail Pressure Sensor Circuit High Bank 2
Fuel rail pressure sensor B2 signal voltage above expected range. 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 P01C1?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire open
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Rail Pressure Sensor B2, Sensor Wiring
Related codes
- P01BEFuel Rail Pressure Sensor Circuit Bank 2
- P01BFFuel Rail Pressure Sensor Circuit Range/Performance Bank 2
- P01C0Fuel Rail Pressure Sensor Circuit Low Bank 2
- P01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2
- P01C3Fuel Pressure Sensor A Circuit
- P01C4Fuel Pressure Sensor A Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.