P0404 - OBD2 Trouble Code

Hyundai I30 CRDI - errorcode p0404 EGR-Valve Please help :) code p0404

The P0404 diagnostic trouble code refers to the Exhaust Gas Recirculation system circuit having a rangeperformance issue The EGR system is

code p0404 Autohex online Help for members only, Vehicle:TUCSONix35 Model Year:2011 fault code:p0404  This code points to either carbon buildup or a bad EGR valve However that doesn't rule out the following: P0404 -EGR POSITION SENSOR RATIONALITY This is a rationality conflict with pintel position, the PCM does not like the info it is getting

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