P05FCCold Start Fuel Pressure Performance Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- During a cold start, direct injection petrol engines usually raise rail pressure for finer atomisation with multiple injections while the catalyst heats up. P05FC monitors whether the actual rail pressure of bank 2 stays within the target window during this phase – only engines with separate rails and pressure sensors per bank (V or boxer engines with two high-pressure circuits) can set it. CARB lists fuel pressure as a cold start component that must respond measurably beyond what would happen without the strategy. No manufacturer document available to us uses P05FC; Ford checks the single-rail counterpart P053F and flags a fault when the share of cold start time inside the pressure window is 0.70 or less, and Kia replaced the engine module of the 2018 Stinger 2.0T for P053F with stumbling during warm-up. GM uses P2C1E–P2C20 instead.
- What you may notice
- Check engine light on
- Stumbling, hesitation or rough idle during warm-up
- Poorer cold start
- Usually normal once warm
- Likely causes
- LikelyHigh-pressure pump or volume control valve of bank 2 weak or sticking
- PossibleLow supply pressure (low-pressure pump, filter)
- PossibleRail pressure sensor of bank 2 inaccurate
- PossibleEngine module software
- RareLeaking injector or pressure relief on bank 2
- 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: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.