OBD-II code · Powertrain (generic)
P01C9 Fuel Rail/System Pressure - Too High Bank 2
Rail pressure on bank 2 above the target operating range. Often regulator or sensor fault.
Is it safe to drive with P01C9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyRegulator stuck closed
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Pressure Regulator, Fuel Rail Pressure Sensor B2
Related codes
- P01C6Fuel Pressure Sensor A Circuit High
- P01C7Fuel Pressure Sensor A Circuit Intermittent/Erratic
- P01C8Fuel Rail/System Pressure - Too Low Bank 2
- P01CAFuel Rail Pressure Too Low - Engine Cranking Bank 2
- P01CBCylinder 1 Injection Timing Performance - Over Retarded
- P01CCCylinder 1 Injection Timing Performance - Over Advanced
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.