P0455 on Your 2022 BMW X5
A P0455 on your 2022 X5 (G05) signals a large EVAP leak. Your inline-6 or V8 runs fine—this is vapor system only. The gas cap is the most common cause.
Evidence
- Check engine light with P0455
- Possible fuel odor
- Gas cap issue
- EVAP readiness incomplete
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$30.
- EVAP Leak Detection Pump (Medium Likelihood): BMW LDP. $280–$500 installed.
- Purge Valve (Medium Likelihood): Sticking. $200–$380 installed.
- Fuel Tank Vent Valve (Low-Medium Likelihood): Seal failure. $220–$420 installed.
- Vapor Hose (Low Likelihood): Connection issue. $100–$280.
Diagnosis
Gas cap first. If P0455 returns, BMW ISTA diagnostics or smoke testing will isolate the fault.
Warranty
Your 2022 X5 is likely under BMW's 4-year/50,000-mile warranty through 2026. Federal emissions (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 is vapor only. Engine, xDrive, air suspension, and towing all unaffected.