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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 104 (Engine Control System Diagnosis - 2.0L (4 Of 6)) >> DTC P0455-00: Evaporative Emission System-Leak Detected (Large Leak) >> DTC Information >> DTC Description

DTC Description

WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.

The ECM/PCM closes the CCV at the charcoal canister to seal off the evaporative emission system and then opens PCSV to generate a vacuum in the fuel tank. This vacuum generation phase will determine if there is a large leak like tank cap open or CCV stuck open. The ECM/PCM sets DTC P045500 if the pressure in the fuel tank does not drop as low as predetermined threshold during predetermined maximum vacuum generation period.

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