How does the app know what my "check engine" light means?

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Posted 5 years ago

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When the “check engine” light comes on, your car’s computer reports the diagnostic trouble codes that are responsible. The app then downloads detailed descriptions of these codes to help you better understand what’s going on. If you’d like to learn even more, the app can direct you to more resources on the web.

Automatic can read and interpret any generic "P" class OBD II code given by the car. We can also interpret generic codes in B, C, and U classes in cars that use these codes. However, some cars also give manufacturer-specific codes in addition to generic codes. While we can *read* most manufacturer-specific codes, we can't at this time *interpret* them. This means that we do not detect other maintenance codes such as low oil level, etc. Also, if an indicator light other than the Check Engine Light comes on, Automatic will not detect it.

To learn more about your vehicle's "Check Engine" light, check out this blog post.
(Edited)

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