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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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1 Answer

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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2 Comments:

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.

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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 will be eternally grateful.
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