Honda Odyssey 2016 traction control light, ABS light, brake light would come on at the same exact time and the battery light, but the battery has been changed and the alternator has been changed and that starter is good The lights do dim and the battery light has come on and would go off. What is the issue? 3 mechanics looked at it and said they cannot find the issue
You can buy a little computer that plugs into the car and will tell you the error codes. Or go to AutoZone or O'Reilly and they'll check the codes for free... Lookup OBD Scan Tool
Everyone should have an OBD reader. You can get them for as little as $20 and a cheap one is fine. Just search OBD2 Scanner on Amazon.
Did you get a diagnostic from the Honda dealership? It sounds electrical. Watch a few YouTube videos on checking the circuits. It’s not so much hard as it is incredibly time consuming to figure out what it is.
Might be ECU. Or a bad ground. You won't find the answer on blind my dude.
This. When you get a ton of lights at once it’s either some type of catastrophic failure which it doesn’t sound like it is, or you’ve got an electrical/ECU/sensor issue. Blind unlikely to help. Try using an OBD reader to get codes or go to a space dedicated for problems like this (is there such a thing as a Honda Odyssey forum?).