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Discussion Starter · #1 ·
hey i got a P0400 code. The light goes off and on at differnet times. The idle is rough and gas mileage sucks. What is it and how to fix. Also what are common problems that i should look at fixing. I am new to kia
 

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2015 Buick Verano "Leather Group", 2015 Kia Optima Hybrid
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