Tank venting and fuel vapours
P1425 Purge valve circuit shorted to ground
P1425 means: Purge valve circuit shorted to ground. Fuel vapour from the tank is collected in a charcoal canister and burnt in the engine. OK to drive, but have it checked soon. The most common repair costs about €15–30 in Estonia, depending on make and model.
Is it safe to drive?OK to driveOK to drive, but have it checked soon.
Fuel cap replacement€15–30parts and labour in Estonia, depending on make and model
What it means
Fuel vapour from the tank is collected in a charcoal canister and burnt in the engine. The computer found a leak or a valve fault in this system. It usually doesn't affect driving.
This is a make-specific code (VAG). The exact meaning can vary by model and year.
What you may notice
- Engine light on
- Sometimes a faint fuel smell
- The pump nozzle may click off early when filling
What could be wrong
- 1Fuel cap loose or its seal worn · Fuel cap replacement €15–30
- 2Purge valve stuck or leaking · EVAP valve or canister replacement €120–240
- 3Cracked vapour hose · Leak check and hose or gasket replacement €60–120
- 4Charcoal canister or vent valve · EVAP valve or canister replacement €120–240
Repair difficulty: Easy
What you can check yourself
Tighten the fuel cap until it clicks. If you smell strong fuel, have it checked straight away. You can do the simpler checks yourself.
How we fix it
- We check the fuel cap and seal
- We smoke-test the system
- We test the valves with the diagnostic tool
- We replace the valve, hose or canister
Standard SAE description: Tank Vent Valve Short to Ground