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Thread: 1998 A6 2.5 TDI - Map Sensor Location

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  1. 1998 A6 2.5 TDI - Map Sensor Location 
    #1
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    Hi Guys,

    I have an A6 which I think is stuck in limp mode.

    So far I've changed:- maf sensor, air filter and am replacing all the vac tubing which I should finish tomorrow.
    I've checked with VCDS and the Maf error code has gone, I just have one left which seems to point to the MAP sensor.

    575 Intake manifold pressure - control limit not reached.

    Could someone advise me please where it is, post a photo etc.

    Thanks

    Andy
     
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  2. Re: 1998 A6 2.5 TDI - Map Sensor Location 
    #2
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    I'm no expert, but when i had this fault code it was due to the tension on the injector pump being too slack. Since you've got everything exposed check the injector pump tension. If the engine has lost timing then you'll need to time it again. There are plenty of cheap timing tools on auction sites, etc and loads of info on the web how to do it properly. Good luck.
     
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  3. Re: 1998 A6 2.5 TDI - Map Sensor Location 
    #3
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    It can be a boost leak, a worn turbo....
     
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