You might want to try reading it again. Here's the page from the 2017 owner's manual, notice what it says under code 4.Thanks. I checked out the owners manual link above and it did not list the timing belt as being part of A124.
Hmm... Not sure how you're not seeing it. Right next to code 4 in the table of maintenance sub items in the page from the 2017 Honda Pilot owner's manual I've attached:I was looking at the under maintenance minder codes and it does not mention the timing belt. I will check my manual. Thanks