Decoding P0456 on Your 2019 Honda CR-V
A P0456 on your 2019 CR-V (5th generation) means a very small EVAP leak. The 1.5L turbo uses Honda's canister vent shut valve system. Basic warranty has expired, but emissions coverage extends through 2027.
Clues
- Check engine light on
- P0456 stored
- No performance issues
- Gas cap may be worn after 6+ years
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Age wear. $10–$20.
- Canister Vent Shut Valve (Medium Likelihood): Honda valve. $100–$240 installed.
- Purge Solenoid (Low-Medium Likelihood): Age-related. $90–$220 installed.
- EVAP Hose (Low Likelihood): Aging. $80–$180.
- FTP Sensor (Low Likelihood): Degraded. $120–$260 installed.
Diagnosis
New gas cap first. If P0456 persists, a sensitive smoke test or HDS diagnostics will find it.
Warranty
Honda's 3yr/36k expired in 2022. Federal emissions (8yr/80k) covers EVAP through 2027.
Safe to Drive?
Yes. P0456 has no performance impact.