Check Engine Light Code P1685

Discussion in 'Speed Triple' started by glenn smith, Jan 16, 2025.

  1. glenn smith

    glenn smith Member

    Dec 13, 2024
    25
    18
    CALIFORNIA
    To all thats been following my post bellow ..after the third cold start the check engine light was still on...i have a Bosch 1200 scanner that i use for our autos...i blew my mind when it was comunicating with the bike ecu.... found code P1685.... I removed the code and check engine light is off...what i dont understand is this started after removing battery terminals etc
     
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  2. glenn smith

    glenn smith Member

    Dec 13, 2024
    25
    18
    CALIFORNIA
    Found this...
    The code refers to the ECU relay that lives under the seat. Have a look at it and see that it's seated and plugged in correctly. The code can also come up if fuse number 5 is faulty or has a faulty connection. It's labelled as "ECM relay" on this photo:
    And this
    On a 2014 Triumph Speed Triple R, code P1685 typically indicates a fault related to the "Throttle Position Sensor (TPS)" circuit, signifying that the motorcycle's computer is not receiving a proper signal regarding the throttle position, potentially leading to issues with engine performance and fuel delivery.
     
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  3. thebigg

    thebigg New Member

    Apr 21, 2018
    0
    1
    Brisbane, Australia
    My 2011-2016 service manual contain this
    upload_2025-1-22_11-32-30.png
     
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  4. glenn smith

    glenn smith Member

    Dec 13, 2024
    25
    18
    CALIFORNIA
    Thanks for that info..its been ok so far ...have to find out which one it is
     
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  5. glenn smith

    glenn smith Member

    Dec 13, 2024
    25
    18
    CALIFORNIA
    After swapping the ems relay its been no problem
     
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