p0456
Easy Fix
Kia · SUVs
Evaporative Emission System Leak Detected (very small leak)
Quick Answer
Error code P0456 on your Kia SUVs means: Evaporative Emission System Leak Detected (very small leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
KX9EV9 GT-Line 2024EV9 Light 2024EV9 Wind 2024Seltos EX 2024Seltos LX 2024Seltos S 2024Seltos SX 2024Sorento EX 2024Sorento LX 2024Sorento S 2024Sorento SX 2024Sorento SX Prestige 2024Sorento X-Line 2024Sportage EX 2024Sportage LX 2024Sportage SX Prestige 2024Sportage X-Line 2024Sportage X-Pro 2024Telluride EX 2024Telluride LX 2024Telluride S 2024Telluride SX 2024Telluride SX Prestige 2024Telluride X-Line 2024Telluride X-Pro 2024AP3AP3-EKX2MQ4MQ4-HPSKMKM-HKX
Likely Causes
How to Fix It
1
Inspect all EVAP connections
2
Check fuel cap gasket
3
Test vent valve operation
4
Perform helium leak test
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Fuel cap
EVAP hose clamps
Vent valve
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