Investigating P0455 on Your 2022 Infiniti QX60
A P0455 on your 2022 QX60 (all-new 2nd generation) signals a large EVAP leak. The redesigned QX60 with the 3.5L V6 and 9-speed auto uses Nissan's EVAP system with a vent control valve. Infiniti's 4-year/60,000-mile warranty runs through 2026.
Evidence
- Check engine light illuminated
- P0455 stored in ECM
- Possible fuel odor
- Gas cap not clicking
Causes by Likelihood
- Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$25.
- Vent Control Valve (Medium Likelihood): Nissan EVAP vent valve. $130–$280 installed.
- Purge Volume Control Valve (Medium Likelihood): Sticking. $120–$260 installed.
- Charcoal Canister (Low-Medium Likelihood): Saturation. $250–$450 installed.
- Fuel Tank Pressure Sensor (Low Likelihood): False reading. $140–$280 installed.
Diagnosis
Gas cap first. Drive 2–3 days. If P0455 returns, your Infiniti dealer with CONSULT diagnostics or a smoke test will locate the leak.
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 the V6, 9-speed, AWD, or any QX60 features.