The problem you and me have with knock sensor is unique, they had a hard time finding the problem. The service manager stated they had to call Honda Corp. to diagnose it. He said there were a few 2019 with this problem and the fix was changing the whole wiring hardness and knock sensor. I even posted about this on this forum. My problem started at 1000 and I'm on 5000k now without a problem coming back. Tell them about wiring harness, In addiction, I filed a lemon law because the car was In dealership 3 times for same problem. Hopefully I get my money back and will buy a Toyota which is much more reliable.They don’t listen to me!Beside that other codes came on too!
Dealership has it as I writing this!They are guided by A Honda!Waiting for the phone call to hear what they found this time!
One thing for sure if it’s not ultimately fixed I will be filing a petition for a full refund!
All this crap already in the service book and the carfax history which is degrading the value of this car!
I’ll post up what happened!