Tracking P0455 on Your 2022 Hyundai Elantra
A P0455 on your 2022 Elantra indicates the ECM found a large EVAP leak. Your 7th-generation Elantra with the 2.0L Atkinson-cycle engine is well within Hyundai's generous warranty. The gas cap is the simplest cause to check.
Clues
- Check engine light with P0455
- Possible fuel odor
- Gas cap not clicking
- Emissions monitor incomplete
Suspects Ranked
- Gas Cap Seal (Very High Likelihood): Loose or worn. Tighten or replace ($10–$25).
- Canister Close Valve (Medium Likelihood): Hyundai's vent valve. Warranty-covered.
- Purge Control Solenoid (Medium Likelihood): Stuck open. Warranty-covered.
- Vapor Line (Low Likelihood): Cracked. Warranty-covered.
- Charcoal Canister (Low Likelihood): Saturated. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit a Hyundai dealer—all EVAP repairs are warranty-covered.
Warranty Coverage
Hyundai's 5-year/60,000-mile basic warranty runs through 2027. The federal emissions warranty (8yr/80k) covers EVAP through 2030. You have excellent coverage.
Safe to Drive?
Yes. P0455 doesn't affect the Elantra's engine, IVT, or any systems.