Use the iPhone/iPad OBD2 Code Guide app to look up your car check engine code on the go, powered by the web's largest database of OBD2 code library. Now with support for 15 languages. English, German, Spanish, French and Russian... and more

Get the description and the possible cause of the check engine code by searching for the code for all of the major manufacturers.
Support cars :

Acura, Audi, BMW, Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, GMC, Honda, Hummer, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, KIA, Land Rover, Lexus, Lincoln, Mazda, Mercedes-Benz, Mercury, MINI, Mitsubishi, Nissan, Oldsmobile, Pontiac, Saab, Saturn, Scion, Subaru, Suzuki, Toyota, Volkswagen and Volvo all on the go.

Don't get cheated by your mechanic. Have the facts with you.