It does say in the owners manual that it's per the minder or per time depending on which item. It very well may be due to that. My wife has a 2012 Accord and I had a 2013 Civic and we would always hit 5k miles and still have plenty of % left as far as oil changes. I'm not sure there is a way to set the minder back up to a certain %, just full, so you may just have to reset it to full and then do an oil change as some pre-determined mileage (5k maybe?), reset it again, then see what happens from there.
It's all relative though, so I wouldn't get too hung up on it. With my wifes car and my previous Civic we put so few miles on each year I think sometimes I was still at 40-50% oil life but I'm not quite at the point where I would say it's a good idea to get an oil change every 10k miles so I usually stuck to around 5k.
It's all relative though, so I wouldn't get too hung up on it. With my wifes car and my previous Civic we put so few miles on each year I think sometimes I was still at 40-50% oil life but I'm not quite at the point where I would say it's a good idea to get an oil change every 10k miles so I usually stuck to around 5k.