grahamjf Posted September 2, 2016 Share Posted September 2, 2016 Hi allI took my car to audi to get a diagnostic check done came back as egr valve insufficient flow.Bought a new siemens EGR valve and I am Still getting the same fault codeThe pipe feeding the egr valve has slight oily/sooty coating on the inside which can be wiped off with your finger. No blockages in the pipe.What else could cause this fault?2005 Audi A4 2.0Tdi Quote Link to comment Share on other sites More sharing options...
Trevor Posted September 5, 2016 Share Posted September 5, 2016 I would think it may be a sensor fault...gummed up with oil/soot? Can you by-pass the sensor? Quote Link to comment Share on other sites More sharing options...
grahamjf Posted September 5, 2016 Author Share Posted September 5, 2016 thanks for the reply Egr delete springs to mind lol 1 Quote Link to comment Share on other sites More sharing options...
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