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VCDS diagnostic functions for MAF sensor operation.

Just Rob. Oct 17, 2018

  1. Just Rob.

    Just Rob. Moderator Staff Member Moderator Regional Rep Team Brilliant Black Team Daytona TFSI Owners Group Gold Supporter VCDS Map User Audi A4 Audi Avant Owner Group quattro S-line owners group Manual

    Posted this question on this B7 section really as it's for my B7 and there maybe a specific vcds set of functions that need accessing for me to check the situation.
    So then having managed to sort out all the previous error/faults etc in vcds , I now have an error / fault free car, well for the time being that is.

    My question now is regarding the MAF sensor operation or possible lack of correct operation.
    I cleaned it last Friday with a recommended spray as it was filthy , next day I had a whole raft of electrical gremlins plague the car, maybe connected or not I couldn't say for sure but just strange that they all occurred the next day the first time I started the car after cleaning the MAF.

    Anyway, there are no current faults for the engine or MAF but the fuel consumption since cleaning the MAF has dropped through the floor, urban MPG has dropped too but the onboard computer maybe misreporting data or it was prior and now its closer to actual consumption.
    As no fault is being reported I don't want to be lashing out on a new MAF at around the £100 + bracket if it's working within specs.
    I was under the impression I could view the correct parameters in vcds to see if it was running within tolerance but thus far I cant find any section with the info , that is of course its viewable in vcds.

    If anyone has knowledge of how this can be done or even if it can be done please can you advise on the procedure as I really need to get to the bottom of things , either to discount the MAF as its working or if its failed and I can organise a new sensor.
    Any input would be very greatfully received chaps.

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  3. ch1z64

    ch1z64 C'mon you's bhoy's in Green Team Imola TFSI Owners Group Silver Supporter Team Sprint Audi S3 Manual

    Just a quick thought , might want to throw this onto the Ross-Tech forum

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