Ray Singh Posted September 10, 2021 Report Share Posted September 10, 2021 All, My daughters 52 plate Lupo 1.4 16v has had the EML light come on. A quick OBD II diagnostic later and I can see the fault is P0407 - Powertrain Exhaust Gas Recirculation Sensor "B" Circuit low. We have noted that the fuel consumption has increased. Any ideas please? Quote Link to comment Share on other sites More sharing options...
mk2 Posted September 10, 2021 Report Share Posted September 10, 2021 What do the measuring blocks look like in vcds? Fuelling, O2 numbers, temps and egr rates? My guess is probably iffy EGR valve? Quote Link to comment Share on other sites More sharing options...
Ray Singh Posted September 11, 2021 Author Report Share Posted September 11, 2021 Thanks Mk2 - I dont know how to read these numbers out. I only have a very basic OBD2 reader -Ebay special via an app called Torque on my phone. Quote Link to comment Share on other sites More sharing options...
mk2 Posted September 11, 2021 Report Share Posted September 11, 2021 To be sure where the problem comes from, more info is needed I guess... Not sure what else to suggest, as that code can be caused by quite a few things. Or a combination. But I'm fairly certain it has something to do with fuelling or air flow if that helps! Quote Link to comment Share on other sites More sharing options...
Rich Posted September 11, 2021 Report Share Posted September 11, 2021 I've found when the seals go on the intake somewhere (plastic **** specific) it starts making these kind of allegations but it's more of a deviance code. Quote Link to comment Share on other sites More sharing options...
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