It is saying that one of the engine management components gave a fault for a while. The details (which may be misleading) are stored in the ECU and can be recovered with the right knowledge. If the light does not recur then ignore it. After twenty starts with no problems the stored trouble codes will be erased, so if you want to know what the fault was take it to a dealer or buy or make a trouble code reader. My feeling is ignore it unless it happens frequently or the engine doesn't run right.
mrcheerful