P04F1EVAP System Purge Line Performance
- 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
- P04F1 is the function check of a purge line that is not the high-load path A – by the wording of another code list the low-pressure path to the intake manifold, counterpart of P04F0. The purge valve opens and the tank pressure or mixture reaction is missing or wrong: the line is blocked or off, or a check valve sticks. CARB requires every purge path to be checked; a FCA patent describes such a stepwise test. No manufacturer document available to us names this code.
- What you may notice
- Check engine light on
- Possibly fuel smell
- No change in driving
- Likely causes
- LikelyPurge line to the intake manifold off, kinked or blocked
- PossibleCheck valve in the low-load path sticking
- PossiblePurge valve not opening fully
- RareTank pressure sensor misreading
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.