P0455 KIA - Evap emission system large leak detected

Question

EVAP emission system-large leak detected for 2008 Kia Sportage and the gas cap has been replaced 2 times in the last month. which to fix 1st.. Faulty selenium or where to look/fix in a leak in emission system?

Answer 1

Hi there,

Normally the best method for testing on these is to have a smoke test done to locate the leak. The most common issue is the vent control valve. This is located on the charcoal canister under the car.