Macbook Pro CPU Temperature Sensor Error

Discussion in 'MacBook Pro' started by appleistheshiz, Aug 17, 2013.

  1. appleistheshiz macrumors newbie

    Joined:
    Jul 15, 2010
    #1
    So I just bought a broken Macbook Pro 13" 2.3ghz i5 2011 thinking it was just running extremely slow and having glitchy graphics because of a failed hard drive, but after verifying the hard drive, that does not seem to be the problem. I also checked the RAM, by switching out the memory with another set, and reinstalled OSX. So then I finally ran the Apple Hardware Test, and received this error:

    4SNS/ 1 /C0000008: TC0D--124

    Which I looked up and it's the CPU Temperature Sensor. So I ran Fan Control and I got this read out:
    left fan:6,196 RPM
    Right fan:-1 RPM
    Temp: -198 F

    So I've reset the PRAM and SMC, and nothing has worked. Do you guys have any ideas? Is there anyway to replace this sensor? Is this the reason why my Macbook Pro would be running so extremely slow & glitchy?

    Thanks!
    Michael
     
  2. jav6454 macrumors P6

    jav6454

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    #2
    Go to Apple and show them the stats of your system. They should figure it out and repair it under warranty (if it still is).
     
  3. Astroboy907 macrumors 65816

    Astroboy907

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    #3
    Does warranty transfer over purchases like this?
    Anyways, couldn't hurt to have apple look at it and give an estimate at least...
    OP: Does the right fan run at all?
     
  4. jav6454 macrumors P6

    jav6454

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    #4
    The warranty stays with the product, not the owner.
     
  5. monokitty macrumors regular

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    Sep 16, 2011
    #5
    The right-hand side fan is dead, for one thing, which will cause a temperature spike. Even out of warranty, fans are dead cheap to replace.
     
  6. Macman45 macrumors demi-god

    Macman45

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    #6
    ^^

    This. If the machine has AC or is still in warranty, then the repair is a simple job that can be done by Apple at a genius bar. In the meantime, avoid running anything intense until you can get that dead fan replaced.
     
  7. appleistheshiz thread starter macrumors newbie

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    Jul 15, 2010
    #7
    There is only one fan on these 13' macbook pro's, on the left side so thats not why.
     
  8. Astroboy907 macrumors 65816

    Astroboy907

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    #8
    Cool, just checking. I've never had a mac with a warranty, always bought used and out of warranty :D

    ----------

    Hmm... maybe try a reinstall of the OS? I doubt it would help but it's worth a shot before you try to do some logic board repair.
     
  9. appleistheshiz thread starter macrumors newbie

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    Jul 15, 2010
    #9
    even if the sensor is broke, why would that make the whole macbook run slow? It might be the sata cable to the hard drive.
     
  10. jav6454 macrumors P6

    jav6454

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    #10
    Why? The MacBook uses these sensors to gauge how hot the CPU is. If the CPU gets too hot, then the hardware will throttle itself to prevent thermal damage. In other words, this throttling will slow down your CPU to diminish heat utput.
     
  11. w00t951 macrumors 68000

    w00t951

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    #11
    My 2011 MacBook Pro's integrated GPU diode is messed up. It usually reads -128C, which is obviously incorrect. I just gave up, since it never caused me any problems.
     
  12. jav6454 macrumors P6

    jav6454

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    #12
    You can get it fixed. Apple will swap that out as its a hardware defect. Besides, there is no easy way to fix that burnt/broken diode.
     
  13. w00t951 macrumors 68000

    w00t951

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    #13
    Even if it's out of warranty? How much do you think it'll run me?
     
  14. jav6454 macrumors P6

    jav6454

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    #14
    A diode? Well, if its on die diode, doubt you'll be able to fix it on your own.
     
  15. w00t951 macrumors 68000

    w00t951

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    #15
    Obviously, the i7-2820QM, like most other mobile chips, is BGA, not LGA. But how much would Apple want if I took it to the Store without a warranty?
     
  16. Astroboy907 macrumors 65816

    Astroboy907

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    #16
    Don't know exactly, maybe around $300, maybe $600. But they might be generous and replace the board for free if you show it is a defect.
     
  17. appleistheshiz thread starter macrumors newbie

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    Jul 15, 2010
    #17
    I just checked the sata cable for the hard drive, no luck, still runs slow. Any ideas?
     

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