What does P0497 mean?
The computer commanded purge flow but saw less than expected.
Codes are a starting point. They tell you which test failed, not which part to replace. Check for other stored codes and fix those in a sensible order.
Symptoms
- Check engine light
- Possible fuel smell
- Hard starting after refueling (with purge problems)
- No change in how the car drives in most cases
Common causes
- Purge valve stuck closed
- Blocked or kinked purge hose
- Clogged canister
How to diagnose P0497
- Check the fuel cap and its seal first.
- Run a smoke test, the most reliable way to find EVAP leaks.
- Command the purge and vent valves with a scan tool and check that they open and seal.
- Inspect the filler neck and hoses under the vehicle.
How to fix it
- Replace the purge valve
- Clear or replace hoses
Estimated repair cost
Likely repairs for P0497 run from about $100 to $700, depending on the cause.
| Repair | Typical range (parts + labor) |
|---|---|
| Diagnostic fee (scan + testing) | $100 - $200 |
| EVAP purge valve | $100 - $300 |
| Charcoal canister replacement | $250 - $700 |
These are rough US estimates for an independent shop in 2026, based on typical parts prices and standard labor times. Dealers, big trucks, luxury brands and high-cost areas often run higher. They are not quotes. Use the repair cost estimator to adjust for your vehicle.
How serious is P0497?
Low severity
Safe to drive. It will fail an emissions test until fixed.
P0497 FAQ
What does P0497 mean?
P0497 stands for "Evaporative Emission System Low Purge Flow". The computer commanded purge flow but saw less than expected.
Can I drive with a P0497 code?
Safe to drive. It will fail an emissions test until fixed.
How much does it cost to fix P0497?
It depends on the cause. The likely repairs for P0497 range from about $100 to $700 at an independent shop in the US, plus a diagnostic fee of roughly $100-$200. These are rough estimates; dealer prices and some vehicles run higher.
What is the most common cause of P0497?
The most common causes are: purge valve stuck closed; blocked or kinked purge hose; clogged canister.