what diagnostics have been carried out thus far?
No test light has gone off itself should I be worried
I will provide an honest answer. I trust this will be appreciated on a saturday. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.
the fact the light came on indicates that an engine fault was recognized and logged by the car's computer
so, there definitely was an issue present at least momentarily
if the light comes back, this mens the issue is back and yes you should be worried if it does
if it does come back, you must have the computer fault log read out with a diagnostic scan tool to identify the underlying trigger of the warning (the light itself is not specific and only serves to notify the driver a fault is present, it MUST be diagnosed with a scan tool)
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.