Investigating P0455 on Your 2022 Jeep Compass
A P0455 on your 2022 Compass means the PCM found a large EVAP leak. This refreshed Compass with the 2.4L Tigershark engine may still be under warranty. Gas cap is the first suspect.
Symptoms
- Check engine light with P0455
- Possible fuel odor
- Gas cap issue
- EVAP readiness incomplete
Causes by Probability
- Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$25.
- EVAP Canister Vent Valve (Medium Likelihood): Stellantis vent valve. $140–$280 installed.
- Purge Solenoid (Medium Likelihood): Stuck open. $130–$260 installed.
- Vapor Line (Low Likelihood): Connection issue. $80–$200.
- Charcoal Canister (Low Likelihood): Rare on newer vehicles. $180–$360 installed.
Diagnosis
Tighten or replace the gas cap. Drive 2–3 days. If P0455 persists, visit a Jeep dealer—wiTECH diagnostics can pinpoint the leak.
Warranty
Your 2022 Compass may still be under the 3-year/36,000-mile warranty. Federal emissions warranty (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect the 2.4L engine, CVT or 9-speed, 4WD, or any features.