p0455
Moderate
Kia · Sedans
EVAP System - Large Leak Detected
Quick Answer
Error code P0455 on your Kia Sedans means: EVAP System - Large Leak Detected. 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 filler cap and replace if missing
2
Check all EVAP hoses and connections
3
Perform smoke test to locate large leak
4
Inspect fuel tank for cracks or corrosion
5
Test pressure control valve functionality
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
Fuel tank sealer
Pressure valve
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