Yours sounds most like my issue. 2016 pilot The whole display came on with all of the errors along with keyless startYes, there is a recall on the start/stop switch for the 2016 model year and if the switch is faulty, it will show a keyless start error on the display and also you will get a B12C5 code when the car is scanned. I had to replace mine a few months back but did not have issues with the alarm, just the walk away locking not working and the Keyless start error. You may want to invest in a cheap bluetooth scanner as it will save you money in the long term. I use Bluedriver but there are other cheaper ones out there.
so I replaced the battery this last september but noticed that the walkaway locking wasn't working but everything was fine until December when the Keyless start error started coming on occasionally and now stays on.
I'm in Maine so this is a lousy time of year to be messing with this. I will try my scanner and see if its the button.
OR maybe just take it to the dealer if its under warranty. I've been keeping a battery jumper box in my car.
Seems like something is draining the battery? How is this not a recall? I've had at least 15 Hondas
and always had great luck.