OBD-II code · Powertrain (generic)
P04E0 EVAP System Purge Control Valve A Stuck Closed
Same as P04AF on EVAP purge valve A. The evaporative system captures fuel vapor from the tank and purges it into intake; leaks or stuck purge valves leak hydrocarbons and cause emissions failures.
Is it safe to drive with P04E0?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve stuck closed
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.5 h
- Emissions test
- Likely to fail
- Parts involved
- Evap Purge Valve A
Related codes
- P04AFEVAP System Purge Control Valve B Stuck Closed
- P04DDCold Start EGR A Flow Insufficient Detected
- P04DECold Start EGR A Flow Excessive Detected
- P04DFEVAP System Purge Control Valve A Performance Stuck Open
- P04E1Crankcase Ventilation Hose Connection Sensor Circuit
- P04E2Crankcase Ventilation Hose Connection Sensor Circuit Low
- P04E3Crankcase Ventilation Hose Connection Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.