P00C6Fuel Rail Pressure Too Low - Engine Cranking
- 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
- Direct-injection engines release injection only once the rail has reached a minimum pressure. P00C6 is set when this pressure is not reached quickly enough while cranking, or, in another documented variant, when it drops below the minimum again right after the high-pressure start. Cranking then takes longer or the engine does not start. The check runs once per start; some manufacturers only enable it above a minimum tank level.
- What you may notice
- Check engine light on
- Long cranking
- No start
- Jerking after starting
- Likely causes
- LikelyHigh-pressure pump weak, or its drive cam or follower worn
- PossibleLift pump or low-pressure supply too weak
- PossibleControl valve on the pump faulty
- PossibleLeak or check valve fault letting pressure bleed off after shutdown
- RareVery low fuel level
- 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 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.