Uncovering P0456 on Your 2022 Honda CR-V
A P0456 on your 2022 CR-V (5th generation, final year) means a very small EVAP leak. The 1.5L turbo or hybrid uses Honda's canister vent shut valve EVAP system. Check warranty status.
Clues
- Check engine light on
- P0456 stored
- No drivability symptoms
- Gas cap may be worn
Causes by Likelihood
- Gas Cap Seal (Very High Likelihood): Slight wear. $0–$20.
- Canister Vent Shut Valve (Medium Likelihood): Honda EVAP valve. $100–$240 installed.
- Purge Solenoid (Low-Medium Likelihood): Slight leak. $90–$220 installed.
- EVAP Hose (Low Likelihood): Connection issue. $80–$180.
- FTP Sensor (Low Likelihood): Sensitivity. $120–$260 installed.
Diagnosis
Replace the gas cap. If P0456 persists, HDS diagnostics or a sensitive smoke test will find the very small leak.
Warranty
Honda's 3yr/36k likely expired in 2025. Federal emissions (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0456 has no performance impact.