Question"hi, & how are you?
what are the most common obdII codes for any alfa "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!"
AnswerDepends on the year. If it is a serious problem then the check engine light will flash. A common code set is the one if you leave the engine running while refueling.
You need a code reader to see the codes and Haynes has a code manual.
You can reset the ecu to see if the code persists. Disconnect the negative cable at the battery, wait 5 minutes and then touch the negative cable to the positive cable for 10 seconds and then reattache the negative cable.
