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I have this fault which is P0404, which is saying " Exhaust Gas Recirculation insufficent flow "

Would that mean my EGR needs a good clean on the exhaust/soot side or is it some thing else I need to do.

The alarm does reset, normally appears when engine is not warmed up, when warmed up resets easily.

Any help much appreciated.
 

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afaik, could be the EGR system is clogged ot perhaps the solenoid is not fully opening.
 
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