Powertrain
generic / SAE
P04F0
EVAP System High Load Purge Line A Performance
On engines that have a separate high-load purge line - to use boost pressure to pull vapor on turbo applications - the ECU monitors flow when this path is commanded. The flow is below the expected level - the venturi, line, or check valve is restricted, or the line is incorrectly routed.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / F0
Possible causes
- Line, venturi or check valve restricted high
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–450 €
- Estimated time: 0.8–2 h
- Component: evap high load purge line a
- Component: evap purge venturi
- Component: evap check valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012