P2C00Fuel Pressure Regulator C Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2C00 reports that a third fuel pressure regulator, labelled C, cannot hold the pressure the engine module asks for, although its circuit tests fine. Letters beyond A and B are only needed on fuel systems with several pressure control elements, for example engines with two high-pressure pumps or separate control of low and high pressure. No manufacturer documents P2C00 publicly; regulator C's electrical faults have their own codes P233A to P233C. As a comparable performance check, GM's 2023 table 23OBDG07 watches the high-pressure controller output for its first and second quantity control valves (P0089, P2C01) and flags a fault when it stays beyond plus or minus 7.5 MPa for 10 seconds, on two trips. CARB requires fuel system and pressure control parts to be checked for proper function.
- What you may notice
- Check engine light on
- Reduced power at high load
- Extended cranking
- Likely causes
- PossibleRegulator C or the pump it controls worn or sticking
- PossibleInsufficient feed pressure to the controlled pump
- RareFuel pressure sensor drifting, so the regulator appears off target
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.