2000 Kia Sportage Code P0422

Question

what does PO422-main catyalyst efficiency below thres hold Bank 1 mean?

Answer 1

Hi there,

This means that the main converter, especially if it's a 4 cylinder is not working as it should.This is mounted right on the exhaust manifold and is failing. Most common issue is the converter itself.

Answer 2

P0422 KIA - Main Catalyst Efficiency Below Threshold Bank 1

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