Question about 2006 Kia Optima
What does code mean to repair ?
Code 401 is for EGR flow insufficient.
There is a sensor that measures how much exhaust gas goes thru the EGR valve. The sensor could have failed, or the EGR valve may not be working. The sensor and valve would need to be tested.
Posted on Dec 11, 2012
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Posted on Jan 02, 2017
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