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Thread: A6 3.0tdi quattro Oil Pressure Switch Intermittent fault

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  1. A6 3.0tdi quattro Oil Pressure Switch Intermittent fault 
    #1
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    Hi,

    Been going mad trying to solve this problem. The car keeps going into limp mode if i floor the throttle after say a 20 min ride in normal traffic. I can replicate the symptoms very easily. Got the car scanned and keep getting a OIl Pressure Swict malfunction. Changed two switches so far but problem persists.

    The exact msg as per the Audi workshop scanner is " 5707 1 P164B Oil Pressure Switch Manlfunction(Upper limit exceeded Intermittent)" The car is absolutely fine in part throttle.

    Can a aggressive remap cause this issue? The car is on a custom map where the tuner stays we are pushing close to 330whp and 790nm torque(cannot verify as dont have access to 4 wheel dyno).

    Plan on reverting the car to the stock map and then checking if problem is still there.

    Any suggestions on what else I could check or look for?

    Regards,

    Jignesh
    2009 Audi A6/C6 3.0 tdi quattro remapped stage 2 with full Miltek catback exhaust & K& N filter
     
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  2. Re: A6 3.0tdi quattro Oil Pressure Switch Intermittent fault 
    #2
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    Update

    Hi,

    The problem is finally solved tho not sure which of the componets I changed solved it or was it a combination of all. I changed the oil sump(it had a minor leak), The oil strainer, the oil pump assembly itself and the oil pressure valve. Car has clocked 80,000kms by now.

    Took it for a long drive and tried replicating the symptoms causing the problem which did not happen.

    Can safely say that the problem is solved now.

    Regards,

    Jignesh
    2009 Audi A6/C6 3.0 tdi quattro remapped stage 2 with full Miltek catback exhaust & K& N filter
     
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