Solving P0455 on Your 2022 Subaru Crosstrek
A P0455 on your 2022 Crosstrek means the ECM found a large EVAP leak. This 2nd-generation Crosstrek with the 2.0L or 2.5L boxer engine may still be under warranty. The gas cap is your first investigative lead.
Symptoms to Watch
- Check engine light with P0455 stored
- Possible fuel smell near rear
- Gas cap clicking issue
- Emissions test failure
Causes by Probability
- Gas Cap Seal (Very High Likelihood): Worn or loose. $0–$25 to fix.
- Purge Control Solenoid (Medium Likelihood): Can stick open on boxer engines. $150–$280 installed.
- Vent Control Valve (Medium Likelihood): Testing seal failure. $120–$250 installed.
- Vapor Line (Low Likelihood): Heat damage near exhaust. $80–$200.
- Charcoal Canister (Low Likelihood): Fuel overfill damage. $200–$400 installed.
Diagnosis
Try a new gas cap first. If P0455 returns after 2–3 drive cycles, get a smoke test. Subaru dealers use SSM4 for EVAP diagnostics. The compact engine bay requires care when accessing some components.
Warranty Check
Your 2022 Crosstrek may still be under the 3-year/36,000-mile basic warranty depending on purchase date and mileage. The federal emissions warranty (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect the boxer engine, CVT, Symmetrical AWD, or any safety systems.