Ant12345w Posted November 25, 2022 Share Posted November 25, 2022 Hi all engine management light has just come on put the code reader on and its coming up with codes PO401 and Po401P after googling the code problem seems to be EGR valve is it a case of replacing the EGR valve or could it be something else causing the codes ? any advice appreciated before i take to a garage Quote Link to comment Share on other sites More sharing options...
Steve Q Posted November 26, 2022 Share Posted November 26, 2022 Egr valve failure is common. It's not a cheap job. You could try and get it cleaned but this may only rectify the issue for a short time. Quote Link to comment Share on other sites More sharing options...
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