My baby has started showing the Check Injection message with the service light. It doesn't happen when the car is cold, its always when im sitting at a junction or roundabout and when it happens its like it goes into limp mode because I can't do more than 5mph

It doesnt happen all the time its just random and usually when im least expecting it. The car can go days without doing it then all of a sudden it will do it 5 times on one journey

Sorry its a long post but I am desperate to know what it as im always worried when im driving now and all the garages I have been to havent a clue what it is. Cant get the car to renault until my next pay day so can someone help in the meantime please

My car is an 03 dynamique 1.6vvt. Thanks in advance 4 any replies!!