Acura Repair: common obdII codes, obd2 code reader, vacuum leak

Question
hi, & how are you?
what are the most common obdII codes for any Acura "CHECK ENGINE" usally pops up at dash board.

1-what are the most common trouble codes?
2-what/why is the reason?
3-how to diagnost them?

my questions are long & involve a lot info
any information is highly apprciated or web
thank you!

Answer
The most common codes are usually oxygen sensor codes.
The reason is if the car has a vacuum leak it can set off the sensor.
Diagnosing the problem will require you to spend a whole lot of money in diagnostic equipment and time for training to operate the equipment. Or you can buy a generally basic obd2 code reader ($around 120-180) that comes with an i.d. book and info on operating it.