Sounds like you need to stop relying on the dealer and find one of those old guru mechanics that can diagnose a car just by listening to it. Good mechanics are worth their weight in gold and I promise they’re out there if you look for them.
Hehe they can hear the sound of the computer? I have a couple of excellent mechanics on speed-dial, but they couldn’t have done any better here, and I wouldn’t have gotten the work partially reimbursed, nor would Honda have bought the car back after the damage if it had been a 3rd party. It turned out to be really useful in my case that Honda was the one that tried to fix it, and the dealer admitted the problem was out of our control.
Listening to the computers does not work. Debugging electronics also requires different skillset and oftenly, expensive equipment to even talk to it. Also, manufacturers are increasingly locking down debugability of the cars and after market part availability via parts pairing.
That's why people don't like increasing amount of electronics in cars.
