2022 Infiniti Q50 P0455: Large EVAP Leak Fix

Examining P0455 on Your 2022 Infiniti Q50

A P0455 on your 2022 Q50 signals a large EVAP leak. The 3.0L twin-turbo V6 (VR30DDTT) uses Nissan's EVAP system with a vent control valve. Infiniti's 4yr/60k warranty runs through 2026.

Evidence

• Check engine light on
• P0455 stored in ECM
• Possible fuel odor
• Gas cap not clicking

Suspects Ranked

1. Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$25.
2. Vent Control Valve (Medium Likelihood): Nissan EVAP valve. $130–$280 installed.
3. Purge Volume Control Valve (Medium Likelihood): Sticking. $120–$260 installed.
4. Charcoal Canister (Low-Medium Likelihood): Saturation. $250–$450 installed.
5. Fuel Tank Pressure Sensor (Low Likelihood): Faulty. $140–$280 installed.

Diagnosis

Gas cap first. If P0455 persists, CONSULT diagnostics or a smoke test will find the leak. The Q50's VR30 twin-turbo is unaffected.

Warranty

Infiniti's 4yr/60k warranty runs through 2026. Federal emissions (8yr/80k) covers EVAP through 2030.

Safe to Drive?

Yes. P0455 doesn't affect twin-turbo V6 performance, RWD/AWD, or any features.

Frequently Asked Questions