2012 Hyundai Sonata Hybrid – Check Engine Light With P0456
- Aug 16
- 1 min read
CUSTOMER CONCERN
The check-engine light is on with EVAP very-small-leak DTC P0456.
CAUSE
Smoke testing with soapy water exposed hairline cracks around the charcoal-canister mounting bolts.
CORRECTION
Remove and replace the cracked charcoal canister, clear P0456, and verify the EVAP system passes its leak test.
