Q: Problem issue at startup sometimes.

My car will work normally most of the time. There are points when I try to start car and where it should show the p for park, it just shows a line. When I try to start car then, it turns on and then the engine fades off. Try start again I get a crank and no start. Rest for a day and it will start with errors like Engine system service required. Transmission service. Engine performance reduced. A few others. The check engine light is always on. Last time I got that checked out there were no errors and took it off but it came back. Car rest a bit more it starts normal with no errors except for headlight needs repair and airbag needs repair those have been there since I've had the car for 2 years. Any help with this problem please. Gets very annoying when I need to go to work and this problem happens. Any kind of opinion on the problem will help

My car has 136000 miles.
My car has an automatic transmission.