Tracking P0455 on Your 2022 Subaru Outback
A P0455 on your 2022 Outback means the ECM found a large EVAP leak. Your 6th-generation Outback may still be within Subaru's basic warranty. Check the gas cap first.
Evidence
- Check engine light with P0455
- Possible fuel odor
- Gas cap not clicking
- Emissions monitor incomplete
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or worn. Tighten or replace ($10–$25).
- Purge Control Solenoid (Medium Likelihood): Subaru's purge valve. $100–$200 if out of warranty.
- Vent Control Valve (Medium Likelihood): Stuck open. $120–$220.
- Vapor Line (Low Likelihood): Cracked. $80–$200.
- Charcoal Canister (Low Likelihood): Saturated. $200–$350.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, check warranty status and visit a Subaru dealer.
Warranty Coverage
Subaru's basic warranty (3yr/36k) runs through 2025. The federal emissions warranty (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect the Outback's boxer engine, CVT, or Symmetrical AWD.