I've herd from a friend that you can run a test on your ECU to find faults within the system, he said it's very simple and is done with a paperclip. Does anyone have anymore information on it, links etc... as i'm very keen to try it out.
I dont think thats the case mine went off after about 2 minutes and they were still able to read it.I read somewhere that it only logs them if they are on for 10 mins...
really helpfull thanks a lot