Q: 4SNS/1/40000001: VP0R-6.286

Make an appointment at an Apple store genius bar for a FREE evaluation.  Your MBA has a power bus voltage problem.  This is a hardware issue with no software solution.

Ciao.

Connect its power adapter, and run Apple Hardware Test again.

pavlopytel wrote:

 

After smc resset 3 or 4 times in one time.  And connect power adapter

I start full test and nothing all is ok

So this is a problem?

No. That particular code will normally appear if the power adapter is disconnected when you run AHT. Your Mac is fine.

I would more accurately describe it as a bug in Apple Hardware Test.

Read Mac notebooks: Apple Hardware Test may report SNS alert when power adapter is not connected - Apple Support.