P0497

EVAP System Low Purge Flow

Q: Is it safe to drive with P0497?

Yes. It's a low-severity emissions code and won't affect how the car runs. Fix it to clear the light and pass emissions.

Q: Can I just clear P0497?

It returns until purge flow is restored — usually a stuck purge valve or a blocked hose. Clearing only resets the light.

Evaporative emissions (EVAP) Generic OBD-II Low

What it means

P0497 means the evaporative-emissions (EVAP) system isn't drawing enough fuel-vapor purge flow from the charcoal canister into the engine. The EVAP system captures fuel vapors and burns them during driving; low purge flow usually points to a stuck-closed purge valve or a blocked hose or canister. It's an emissions issue and rarely affects how the car drives.

Low

Can I keep driving? Safe to drive — this is an emissions/fuel-vapor fault. It won't leave you stranded, but it will keep the check-engine light on and can fail an emissions test.

Real-world scan data

Seen in

128

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Usually no noticeable driving symptoms
May fail an emissions/readiness test
Occasional faint fuel-vapor smell

Common causes

Most likely first

Purge valve stuck closed or restrictedLikely
Clogged EVAP canister or blocked purge lineCommon
Kinked, cracked, or disconnected EVAP hoseCommon
Faulty fuel-tank (EVAP) pressure sensorLess often
ECM/PCM fault (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and confirm the code with a scan tool.
Command the purge valve and verify it opens and flows.
Inspect EVAP hoses from the purge valve to the canister for kinks or blockage.
Check the canister and purge line for restriction; test the fuel-tank pressure sensor.
Replace the purge valve if it's stuck closed. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0497?+

Yes. It's a low-severity emissions code and won't affect how the car runs. Fix it to clear the light and pass emissions.

Can I just clear P0497?+

It returns until purge flow is restored — usually a stuck purge valve or a blocked hose. Clearing only resets the light.

Read & clear P0497 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX