p0456
Moderate
Hyundai · SUVs
EVAP System Leak Detected (Very Small Leak)
Quick Answer
Error code P0456 on your Hyundai SUVs means: EVAP System Leak Detected (Very Small Leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Ioniq 5 Limited 2024Ioniq 5 N 2024Ioniq 5 SE Long Range 2024Ioniq 5 SE Standard Range 2024Ioniq 5 SEL 2024Kona Limited 2024Kona N Line 2024Kona SEL 2024Palisade Calligraphy 2024Palisade Limited 2024Palisade SE 2024Santa Fe Calligraphy 2024Santa Fe Limited 2024Santa Fe SE 2024Santa Fe XRT 2024Tucson Limited 2024Tucson N Line 2024Tucson SE 2024Tucson XRT 2024Ioniq 5 SE 2024Kona SE 2024Kona Electric SE 2024Palisade SEL 2024Santa Cruz SE 2024Santa Fe SEL 2024Santa Fe Hybrid SEL 2024Tucson SEL 2024Tucson Hybrid SEL 2024Venue SE 2024
Likely Causes
How to Fix It
1
Inspect fuel cap for cracks and replace if needed
2
Perform smoke test on EVAP system
3
Check all EVAP hose connections
4
Test purge valve operation
5
Replace affected hoses or canister
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 hoses
Smoke test machine
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