My 2016 Honda Odyssey EX-L has fewer than 80k miles on it. Yet it's already had its check engine lights come on leading to replacing a few of the spark plugs and ignition coils. The problem hasn't recurred for a year, but I moved and now have the CEL coming back on. The shop I took it to now said to replace the #2 spark plug and coil, which was just replaced a year ago. The also suggested they could just replace all the spark plugs while they're at it. What could be causing this? I worry that if we don't really know why, I'll be back here again soon.
Edit: I came across some information on another forum about the Variable Cylinder Management (VCM) system in this vehicle being problematic and its recommendation of replacing the sparkplugs and then installing a VCM muzzler. I can't say I understood everything explained there, but it does sound pretty relevant to this situation. I'd be interested in any reactions/experiences with this solution.