Oil was changed, check engine light and motor icon have come on

You have to reset the change engine oil light.

Turn the ignition to the on position do not start it.
Within 5 seconds depress the gas pedal all the way to the floor 3 times and then turn the key off.
Turn the key on and the change oil light should not come back on.

You might have to try it 3 to 5 times until you get the hang of it.
This procedure is in the owners manual.

The only way to find out without alot of guess work is to retrieve the trouble code from the ecm for the check engine light, to do this you will need a OBD II diagnostics tool, there is a data link connector under the drivers side dash where it plugs into, if you don't want to buy one some auto parts stores will do it at no cost, example auto zone.

you need to have the codes erased