MacBook Air YOUR - 6.976 error

I ran the Apple hardware test with my old MacBook Air for two years with the battery power.  I got the "4SNS/1/40000001: YOUR - 6.976" error.

But when I connected power and repeat the test, I do not see this error.  For my MacBook air, when it's on battery, it can only last for 2-3 hours.  I checked the battery, it still has 5213 5440 Mah at full load with cycle counter 333 and normal condition.

Can someone help and tell me what I need to fix it.  Thanks in advance.

The AHT error is normal:

Mac Laptops: Apple Hardware Test may report alert SNS when the AC adapter is not connected

Read that apps can affect Mac performance, battery LIFE, temperature and fan - Apple Support activity.

Tags: Notebooks

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