P0496
PowertrainEvap Systemmoderate severityEvaporative Emission System High Purge Flow
What P0496 Means
The EVAP system is flowing more purge vapor than expected, often because the purge valve is stuck open. This lets fuel vapors reach the engine at the wrong time.
Symptoms
- Check engine light on
- Rough idle or stalling
- Hard starting when warm
Common Causes
- Stuck-open purge valve
- Faulty purge valve solenoid
- Leaking or damaged purge hose
- Faulty vent valve
Diagnostic Steps
- Scan for related EVAP codes
- Inspect purge valve for stuck-open condition
- Test purge valve operation with scan tool
- Check EVAP hoses for leaks or damage
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Community Confirmed Fixes
No confirmed fixes yet for this code. Be the first to contribute!
Submit a FixFound a Fix for P0496?
Help other technicians by sharing what worked on your vehicle.
Submit Your Fix