If warning lights go on but come off when I turn off the engine and restart, are the codes still saved to my iPhone? (Had a problem with warning lights but the dealer couldn't help because they couldn't locate the problem after the car was turned off.)
At this time, Automatic does not display the history of Check Engine Light events in the app. This is something we are looking to implement in the future, but there is no ETA on when that will be done. In the meantime, you can reach out to our tech support team at email@example.com and they can try and surface any CELs you may have had recently.
You may also find use in using an IFTTT recipe for whenever your CEL comes on. For more on this topic, please see this FAQ.