p0456
Moderate
Genesis · SUVs
EVAP System - Leak Detected (Very Small)
Quick Answer
Error code P0456 on your Genesis SUVs means: EVAP System - Leak Detected (Very Small). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Inspect fuel cap sealing surface for damage
2
Check all EVAP hose connections for tightness
3
Perform detailed EVAP smoke test
4
Test purge solenoid operation
5
Inspect canister for hairline cracks
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Fuel cap
EVAP hose clamps
Purge solenoid valve
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