Keyboard and trackpad are unreponsive?

"Replace the trackpad cable. This commonly goes bad on 2015 13"" models, and causes intermittent problems with both the keyboard and trackpad (trackpad needs to be recognised in order for the keyboard to work on this model).

Part is £10 and takes 5 minutes to replace"

"I have the problem with Trackpad and Keyboard not working on a customer's a1502.. Before I go replacing any ribbon cable(s) for a Trackpad or otherwise, can ANYONE answer this..?

Why do both Keyboard and Trackpad work flawlessly outside of Sierra.? Pick ANY Linux distribution - I have 5-7 variants - and boot up to find KB and Trackpad ALWAYS working, ALL the time, without stopping or failing to work.. Thx"

"I had the same problem. It started when I forgot my charger at home and borrowed a MacBook Air charger. A day later the keyboard and trackpad had stopped working. I used an external keyboard and mouse until I have drained the battery. I opened the computer and tried clicking the trackpad cable in place. A day later I got back my charger and the the keyboard and trackpad worked like a charm again.

So I do not know it the problem was me charging the computer with the wrong cable or if the cable had been misplaced or a combination of the both.

EDIT: Since I wrote this post the keyboard and trackpad have stopped working a few more times. But now I have found the solution to my problem. I am pretty sure it is the trackpad connector that there is something wrong with. Disconnecting and reconnection the connector (see step 17 in this guide: MacBook Pro 13"" Retina Display Early 2015 Trackpad Replacement) have fixed the problem. I have also bought a new cable and will install that in my computer when it arrives."

I had a similar problem and was trying to hard SMC reset by opening the Macbook pro and unplugging the battery. This did not help, but after trying this I unplugged the trackpad cable and keyboard cables then plugged them back and it worked! I suspect a loose connection with one of them.