P056 code
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Cadillac Seville / Cadillac Eldorado Forum Discussion, P056 code in Past Cadillac Vehicle Discussion; Driving to work the other day and got a P056 code which is the transmission speed sensor, and the check ...
  1. #1
    trainwreck68 is offline Cadillac Owners Member
    Automobile(s): 1995 Seville STS
    Join Date
    Aug 2009
    Posts
    32

    P056 code

    Driving to work the other day and got a P056 code which is the transmission speed sensor, and the check engine light came on. I only get the check engine light when I engage the cruise control. I have 2 questions: 1. Does anyone know if this sensor is just for the cruise or is it also used for the speedometer. 2. I'm assuming it is a sensor that mounts to the outside of the transmission somewhere, does anyone no where?

    Thanks for any input!

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
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    66
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    70,355

    Re: P056 code

    That is the $50 sensor buried $2000 deep in the trans.

  4. #3
    trainwreck68 is offline Cadillac Owners Member
    Automobile(s): 1995 Seville STS
    Join Date
    Aug 2009
    Posts
    32

    Re: P056 code

    Unfortunately I just found that out. I should have read other threads before posting.

    Thanks.

    Think I'll go back to Ford or Chevy. Less problems and cheaper to fix.

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