I can't confirm that. There is an option to read and erase errors but I didn't get any errors (dtc) ...
It shows a message No errors found but also no definition in the database, so either there are no errors or it doesn't show them. My check engine is off so maybe there are no errors present. I think that this ecu doesn't record past errors if the state is corrected, but maybe I'm wrong.
For the service light I don't know, but there are a lot of options, even reprograming... My guess is probably yes but you need to find it.
Anyway I find the live data most useful. You can drive and replicate the problem and review the data after. You can record all sensors and ecu decisions like fuel trim, iac. This is more usefull than reading errors.
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