P0497 — Evaporative Emission System Low Purge Flow
Category: Powertrain Severity: Low
Updated:
DTC code P0497 means: Evaporative Emission System Low Purge Flow. It falls under the "Powertrain" category, with an estimated severity of Low. Common causes include purge valve stuck closed, blocked or kinked purge hose and saturated charcoal canister; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Purge valve stuck closed
- Blocked or kinked purge hose
- Saturated charcoal canister
- Valve wiring
Symptoms
- Check engine light
- Trouble refueling (pump nozzle keeps clicking off)
- Fuel smell
How to diagnose it step by step
- Check the EVAP hoses.
- Check the purge valve.
- Inspect the canister.
- Replace the faulty part.
How to fix it
Check the hoses and purge valve. If the pump nozzle keeps clicking off, the canister may be saturated (especially if the tank is topped off past the first click).
Estimated repair cost
Valve: $40–150. Canister: $150–450.
Frequently asked questions
What does DTC code P0497 mean?
Evaporative Emission System Low Purge Flow.
Is code P0497 serious?
Severity Low. Usually a minor fault; check the causes listed.
Can I keep driving with code P0497?
Yes, it is safe to drive.
Related codes
P0496 P0457 P0456 P0455 P0453 P0452 P0449 P0447 P0446 P0443
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