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p0755 S90-V90

uid 39111's pic
posted by  Kenner on  Fri Jul 1 17:40 CST 2016
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last visit: Sun Aug 24 15:42 CST 2014
[RELATED]

Looking for help here folks.
Cannot seem to figure where I am getting p0755 code from. 5 seconds after startup.
The trani does not shift properly and after about 15 minutes of driving the car will bog down and stall.
I have tested wiring from the trani, pnp,through the tcm and onto the ecm.
I have ohm and ground tested the solenoids 12.2ohm. Everything looks clean and testes correct.
I have "replaced with known good part" the tcm and ecm and solenoids.
I have replaced new the PNP switch and have adjusted it to correct specs.
This code comes on right away, without touching the shifter

Worth noting, The arrow light does not light when you shift to 3 or L (it should). The arrow light does work when you select W mode.

Kinds looking for a lead or two people.
Does anyone know what sequence it takes to trigger the code?
Help please!

--
72E, 73ES, 91 240, 98 V70, 98 S90








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    p0755 S90-V90

    posted by  KlausC on  Tue Jul 5 11:51 CST 2016
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    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Did you ever look up the code? It is a tranny solenoid gone bad, specifically the S2. It could be the wiring inside the tranny case, but when going that far, just replace the solenoid.
    --
    Keeping it running is better than buying new








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      p0755 S90-V90

      uid 39111's pic
      posted by  Kenner on  Sun Jul 10 12:39 CST 2016
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Sun Aug 24 15:42 CST 2014
      [RELATED]

      Yes p0755 is a solenoid B open/short. I have changed them with some out of another transmission and tested the internal wiring. I have done a lot of diag on the circuits and everything tests out ok.

      Do you know what triggers the cel? It comes on just after start up. Is there a pressure sensor it takes signal from or something?

      Thanks
      --
      72E, 73ES, 91 240, 98 V70, 98 S90








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        p0755 S90-V90

        posted by  hf63 on  Sun Jul 10 16:52 CST 2016
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        last visit: Wed Oct 22 15:19 CST 2014
        [RELATED]

        The solenoid is probably just bad if it bring the code ASAP.








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          p0755 S90-V90

          uid 39111's pic
          posted by  Kenner on  Sun Jul 10 19:10 CST 2016
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          last visit: Sun Aug 24 15:42 CST 2014
          [RELATED]

          I have replaced the solenoids with known good ones and continuity tested the wiring back to the tcm connector.

          --
          72E, 73ES, 91 240, 98 V70, 98 S90








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            p0755 S90-V90

            uid 39111's pic
            posted by  Kenner on  Tue Aug 2 18:57 CST 2016
            Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
            last visit: Sun Aug 24 15:42 CST 2014
            [RELATED]

            Just to put closure on this thread.
            Car is running like a top. found two problems.
            1)Bad solenoid B. changed a bad one for another bad one. Hate when that happens! It sends you for a loop! I could hear that bad one click and it tested within spec at 12.2ohm yet it was still bad.
            2)Intermittent open circuit fuel pump. Sure didn't act like a fuel pump but yes it was.
            Fixed both faults and she runs great.
            Thanks
            --
            72E, 73ES, 91 240, 98 V70, 98 S90







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