C1251 error code

Discussion in 'Problems, Fixes, Tips...' started by Shiftyseamus, Mar 1, 2025.

  1. Shiftyseamus

    Shiftyseamus Copenworld Newbie

    Joined:
    Mar 1, 2025
    Location:
    Shropshire
    Car(s):
    2009 1.3
    Hi, all new owner and just trying to get my Copen through an MOT.

    One of the faults noted was brake fluctuations. I've scanned it and it comes up with C1251 code(pump motor resovoir system).

    Google hasn't really helped much, anyone had any experience with this?

    Thanks

    Sean
     
  2. GuzziMan

    GuzziMan Copenworld Member

    Joined:
    Dec 10, 2019
    Location:
    Densole Kent
    Car(s):
    Mitsubishi Shogun, 659cc Copen, 350 Z
    Hi Sean

    As far as I can make out on page E3 – 19 it states replace the ABS actuator. The sensor may simply need cleaning, hope this helps.
     
    Shiftyseamus likes this.
  3. Shiftyseamus

    Shiftyseamus Copenworld Newbie

    Joined:
    Mar 1, 2025
    Location:
    Shropshire
    Car(s):
    2009 1.3
    Cheers, I've bought a replacement pump and will chuck that on.
     
  4. GuzziMan

    GuzziMan Copenworld Member

    Joined:
    Dec 10, 2019
    Location:
    Densole Kent
    Car(s):
    Mitsubishi Shogun, 659cc Copen, 350 Z
    Hi Shiftyseamus

    Revision on information. It states in the manual: - Making sure that the all the ABS wheel sensors on all four wheels are clean and do not file clean. Clean gently with non-metallic tools and then double check wire connection for each one, to ensure electrical continuity. Do not disturb the distance between the sensor and the disc. In the manual it’s a very finite measurement parameter. These are essentially passive control. (The manuals are accessible on this web site)
     
  5. Shiftyseamus

    Shiftyseamus Copenworld Newbie

    Joined:
    Mar 1, 2025
    Location:
    Shropshire
    Car(s):
    2009 1.3
    Hi, I've fitted a new pump and the errors have cleared.
     

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