I jump the ECU and theres no flashing CEL. It just stays on solid CEL. I'm not sure if this means if the ECU is bad or nott. Does the CEL flash if the engine doesnt have any problems? A few days ago my ecu had code 6,10, and 20. I disconnected the battery try starting again and it wouldnt start. And I try jumping it again and this time around the CEL stays on solid. Help? Or could a bad ecu ground leads to this?