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  1. #1
    Reverse Gear

    Join Date
    Mar 2011

    Electrical malfunction - Starting problem. Please help!?!?! Code 17925

    I've been having an intermittent fault with my A3 1.8T Quattro (2000)
    occasionally it would start on 3 cylinders when warm - now it only starts from cold and when warm will, without fail start on 3 cylinders. I have to leave it about an hour before I can start on 4 cylinders again.

    Snap-on Diagnostics code was;

    17925 - Power supply relay for ECU (J271 or J363) Electrical malfunction P1517 intermittent

    Anybody know exactly what the fix for this fault is?? I would be grateful, it's driving me nuts.

    I also got the following fault but I'm not sure it's related :/

    17521 - o2 Sensor bank 1 sensor internal resistance too high P1113 intermittent.

  2. # ADS
    Join Date
  3. #2
    LEE69's Avatar
    07 170 DSG

    Join Date
    Jul 2013
    I always use google + the code number = 17925/P1517 - Ross-Tech Wiki
    Growing old is mandatory, growing up is optional

  4. #3
    Reverse Gear

    Join Date
    Mar 2011
    Thanks LEE69



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