Following P0455 Clues on Your 2022 Acura RDX
A P0455 on your 2022 RDX (3rd generation TC) indicates a large EVAP leak. The 2.0L turbo-4 uses Honda's canister vent shut valve EVAP system. Your warranty runs through 2026.
Evidence
- Check engine light on
- P0455 stored
- Possible fuel odor
- Gas cap not clicking
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$25.
- Canister Vent Shut Valve (Medium Likelihood): Honda/Acura EVAP valve. $120–$260 installed.
- Purge Solenoid (Medium Likelihood): Sticking valve. $100–$240 installed.
- Charcoal Canister (Low-Medium Likelihood): Overfilling damage. $250–$450 installed.
- FTP Sensor (Low Likelihood): False reading. $130–$280 installed.
Next Steps
Replace the gas cap first. If P0455 persists after 2–3 days, visit your Acura dealer for HDS diagnostics or get a smoke test at an independent shop.
Warranty
Acura's 4yr/50k warranty runs through 2026. Federal emissions (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect the turbo engine, SH-AWD, or any RDX features.