Recently my car's check-engine light came on, I used a car OBDII port code reader to get the diagnostic-trouble-code (DTC) and then I googled what the DTC meant. I noticed that lots of the websites and searches are specific to a make (i.e. Mazda, Honda, etc).
Do car manufacturers provide specific make/model/year information for each diagnostic-trouble-code? Or is it only for make/model? or maybe only specific for the car make (i.e. Mazda, Honda, etc)?
If yes, where is this information officially published by the car manufacturer (is it on the car manufacturer's website or only available to dealers via some non-disclosure-agreement/agreement/special-access)?
It's hard to find good information about the diagnostic trouble codes when you get one on your car. So if there is some "official" documentation I can look up for my make/model/year then I want to find that... instead of some random website that has unverified/unknown-quality information/advice about something important (what is wrong with my car and how to fix the car).