Awasome Kia Sephia Check Engine Light References. Web #1 · dec 17, 2004 the check engine light is one is my car. Web the most common reasons a kia sephia has a check engine light are an emissions system component, a sensor, or a catalytic converter.

Web my check engine light when on yesterday,car is a 2000 kia sephia with 75,000 miles on it,replaced termostat 9 months ago and coolant,temperature gauge. 0% 40 % of the time it's the. The code reads a 343 which is the camshaft sensor.