Trouble code 24

Discussion in 'The Garage' started by Ledzoso, Mar 2, 2005.

  1. Ledzoso

    Ledzoso Registered Member

    Feb 11, 2005
    Likes Received:
    Midland, Tx
    I just used a zero-ohm resistor(aka paper clip) to check my trouble codes. The only code it gave me was 24. This is on of the codes for the VSS. I found where it indicates "set when in motion- disregard when set in park". What does this mean???? There are several self explainatory indicator codes for the vss but I don't know what to do with this one????
  2. Thunder

    Thunder 3/4 ton status

    Jul 20, 2000
    Likes Received:
    Northeast Nevada
    A code 24 will be set if:

    1.The vehicle is not in park or neutral
    2. Engine speed is between 900 and 1500 rpm
    3. Vss shows a speed of 0 mph

    Basicly what it means is thet the ECM sees no signal fronm the VSS when your truck is in gear and moving.

    Either the VSS is bad.
    There is a short or bad conection somewhere.
    On pre 90 models could be a bad speedo cable.
    90+ models the sender on the Xfer case could be bad.

    No VSS siginal can affect IAC valve operation (idle)
    Iginition timing
    Torque convertor lock up.

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