1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    WR = 2st Enduro & CR = 2st Cross

125-200cc Ecu 1 Error Husqvarna Sm 125 2008

Discussion in '2 Stroke' started by Alex1990, Feb 4, 2021.

  1. Alex1990 Husqvarna
    C Class

    Husqvarna Motorcycle:
    WR 125 and SM125
    Other Motorcycles:
    Honda XLR 125, Kawasaki kx 125
    So I have two Husqvarna from 2008, one SM and one WR 125cc with the same Dellorto ECU and the same electronics.
    I went on a ride with the SM and after about 20 KM the engine stopped and the error ECU 1 was shown on the dash, switched the ignition off and on and the error is gone but after 10 seconds same issue.

    Went home and checked all, the only issue I found was a fuse missing, replaced it but same issue, checked the ECU 1 error and it says oil pump, replaced the oil pump but same issue, replaced the oil sensor from the oil tank but same issue, I than replaced the ECU and the issue gone.

    Can it be possible that a missing fuse can cause an ECU fail.
  2. Alex1990 Husqvarna
    C Class

    Husqvarna Motorcycle:
    WR 125 and SM125
    Other Motorcycles:
    Honda XLR 125, Kawasaki kx 125
    Or can I reset the ECU?
  3. k1p Husqvarna

    Husqvarna Motorcycle:
    Husqvarna SMS 125 2012
    Hey, have you fixed the issue? I got the same problem
  4. Alex1990 Husqvarna
    C Class

    Husqvarna Motorcycle:
    WR 125 and SM125
    Other Motorcycles:
    Honda XLR 125, Kawasaki kx 125
    Hey k1p no, the old ECU is bad, i cannot reset it and with the new ECU it is working ok.
    If you find a way to reset the Dellorto ECUs, post it because i tried a bunch of OBDs and software with no result.
  5. k1p Husqvarna

    Husqvarna Motorcycle:
    Husqvarna SMS 125 2012
    I have found an Italian website making remaps of ECU, it costs 120 euros for reset and an racing map, which apparently disables the TCP and Oil Pump. Logically, it should work with faulty ECU, but I'm not sure is it worth trying, an new ECU costs about 400 euros, which is quite expensive..