Question about 2003 Chevrolet Impala
You have an O2 Sensor Code & a couple of EGR
I would guess the EGR issues are setting the O2 Code
Posted on Apr 01, 2011
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Posted on Jan 02, 2017
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P0404....Exhaust Gas Recirculation Control Circuit Range/Performance
the P1404 code doesnt exist in the kia data codes but this one is in the generic codes and if its correct its showing a fault with the EGR valve but i would take it to a kia garage if you have been able to read the codes correctly
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