Tracking P0455 on Your 2022 Audi Q5
A P0455 on your 2022 Q5 (FY facelift) points to a large EVAP leak. The 2.0L TFSI uses VAG's EVAP system with the N80 purge valve and leak detection pump. Your warranty runs through 2026.
Clues
- Check engine light on
- P0455 stored
- Possible fuel smell
- Gas cap issue
Causes by Likelihood
- Gas Cap Seal (Very High Likelihood): Most common cause. $0–$30.
- N80 Purge Valve (Medium Likelihood): VAG solenoid. $150–$320 installed.
- Leak Detection Pump (Medium Likelihood): VAG LDP. $200–$400 installed.
- EVAP Canister (Low-Medium Likelihood): Charcoal saturation. $280–$500 installed.
- Fuel Tank Breather Valve (Low Likelihood): Seal failure. $140–$300 installed.
Next Steps
Gas cap first. If P0455 persists, VCDS or dealer ODIS diagnostics will identify the source. The Q5 shares EVAP architecture with the A4.
Warranty
Audi's 4yr/50k warranty runs through 2026. Federal emissions (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect TFSI power, quattro AWD, or any Q5 features.