Intermittent Temperature Sensor Faults, possible SMC issue?
crwdns2934249:0crwdne2934249:0:
Hi All,
I previously [post|499039] resulting in kernal_task spikes. I thought I had potentially remedied the problem by replacing the HDD data cable as I was getting bad read/write speeds but the issues seems to have comeback.[br]
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Running EFI ASD I get three sensor errors:
TC0D - SMC IO Failed[br]
TC0P - SMC IO Failed[br]
TM0P - SMC IO Failed
Which relates to the CPU 0 Die Analog, CPU Proximity and Battery Charger Proximity (which I think the last is the same as the 5/3.3V proximity) respectively. [br]
This is backed up by abnormal readings in TGPro and iStats menu - readings over 100 and non-existent intermittently, and for prolonged periods of time - in a seemingly non-deterministic way - whilst all the other temperature sensors give normal readings. [br]
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Looking at the schematic for my logic board I think that it could potentially relate to U5510 “CPU Proximity/CPU Die/5V-3.3V Proximity “. [br]
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One last note is that my machine seems to have SMC Version (system): 1.68f99, which looking on apples website is for a new machine (but have read online that the european models may have this slightly newer version) just wanted to check if thats ok.
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Any suggestions?