OBD-II code · Powertrain (generic)
P0496 Evaporative Emission System High Purge Flow
The ECU detected EVAP purge flow during a non-purge condition, or higher than commanded purge flow. Typical causes are a stuck-open purge valve or a damaged vent system that draws unmetered air.
Is it safe to drive with P0496?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPurge valve stuck open
- PossibleEVAP line cracked or disconnected
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
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Evap Purge Valve, Evap Lines
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.