P0449 on a Volkswagen: Causes, Fixes & Repair Cost
🟢 Low severity · drivable
Safe to drive — this is an emissions-system electrical fault — but fix it before an emissions test or a fuel smell appears.
What P0449 means on a Volkswagen
On a Volkswagen, P0449 means the engine computer sees an electrical fault in the circuit for the tank vent valve on the EVAP canister. The valve opens to let fresh air into the canister during a purge, and a corroded connector or a failing valve sets the code.
Is P0449 common on Volkswagens?
P0449 appears on Volkswagen Jetta, Golf, Passat, and Tiguan models, especially as the car ages. The vent valve connector and wiring are the usual failure points on this brand, and independent VW shops see this code regularly.
Commonly reported on: Jetta, Golf, Passat, Tiguan.
Symptoms
- Check engine light is on
- Possible faint fuel smell
- No change in how the car drives
Common causes
- most common: Corroded or loose vent valve connector
- common: Faulty tank vent valve
- common: Chafed or damaged wiring to the valve
- less common: Faulty EVAP canister assembly
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean and reseat the vent valve connector | Yes | $0–30 |
| Repair chafed or corroded wiring | Yes | $40–150 |
| Replace the tank vent valve | Yes | $60–200 |
Frequently asked questions
Other common Volkswagen codes
P0449 on other brands
Looking for the full (non-brand-specific) guide? See the P0449 code page →
Browse all Volkswagen codes: Volkswagen hub →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.