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2.3GHz, 2.6GHz, or 2.7GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

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MacBook Pro 15 Retina Mid 2012 HW Test 4SNS/1/40000000: IM0C-3.134

Anyone know what this code means? 4SNS/1/40000000: IM0C-3.134

My computer randomly shuts down and sometimes when I close it down I have to reboot it if I open it back up even a couple of minutes later. Any ideas?

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Here’s the breakdown of the error

  • 4SNS: System sensor
  • IM0C: DDR 1.35V S3 (Memory) Current Sense (IM0C)

Can you give us some history. Have you banged or dropped quite hard or gotten your system wet?

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May have been a bang or two carrying in my bag. I have never gotten it wet. Everything seemed fine then it started just shutting down right in the middle of doing something. I used smc Fan Control too speed up the fans because I thought it might be overheating. That seems to keep it running but in sleep mode it will completely shut down.


Your logic board needs service. It could be as simple as a cold solder joint or the sensor logic has an issue or the 1.35 voltage regulation has a problem.


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rodneyodell sarà eternamente grato.
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