If you paid for this repair before opening a case with Honda and asking them to cover it under goodwill, you sent the message that you were willing and/or felt obligated to pay out of pocket. This greatly decreased your chances of getting reimbursed unless Honda implements a warranty extension or this becomes a recall.After preaching for years on the virtues of Honda to family and friends I fell victim to the flawed fuel injectors at 44,608 miles on my 2016 Pilot EXL. Paid $1406 to replace the injector and pipe set. Dealer advised Honda has thus far failed to acknowledge the problem that occurred during manufacturing, but I may be able to have Honda reimburse me if Honda later decides to offer an extended warranty on the fuel system. I am thinking class action litigation would be the best chance to bring them to accept accountability. This is not the company I once championed!
Honda has acknowledge that the problem was due to manufacturing debris from the high pressure fuel pump and/or injectors in the TSB, but they haven't extended the warranty or issued a recall even after more than two years.
From what I've seen on this and the Ridgeline forums, Honda has been covering the cost of this repair more often than not. The dealer isn't inclined to fight for you because if Honda covers the repair under goodwill, the dealer won't be able to make profit off of the parts and they'll get less reimbursement for labor compared to customer-pay.
What should have happened is to have the dealer diagnose the problem then call Honda yourself and explain why you feel it should be covered under goodwill. Reference this and the Ridgeline forum and remind them of how many Hondas you've owned and how you always have them serviced at a Honda dealer.