P027ECold Start Fuel Injection Quantity A Lower Than Expected
- 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
- P027E is the cold-start counterpart of P026C: during cold start the engine gets less fuel than commanded, for example because a catalyst-heating injection does not arrive. The check probably works as in warm running, from airflow and lambda against the commanded quantity. The code covers only phases with the cold-start emission strategy active (extra injections to heat the catalyst, raised idle): CARB requires faults of elements also monitored elsewhere to be reported separately during the cold-start strategy. No manufacturer using this code was found; the description follows CARB and the warm-running counterpart.
- What you may notice
- Check engine light on
- Poor cold start, rough running when cold
- Longer warm-up
- Likely causes
- PossibleInjectors coked or clogged
- PossibleRail pressure builds too slowly at cold start (filter, wax, pump)
- PossibleAirflow or lambda measurement inaccurate
- RareSoftware
- 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 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.