The ETS light came on roughly a year ago. I brought it to the dealership thinking it was the ETS recall but they replaced the MAF and all has been good until today. Today the ETS light came on the 2 times I drove the car today. When I got home I grabbed the obd 2 reader, plugged it in, started the car and no light. There were no codes either. Does the 2000 C70 HT coupe not save codes for this? I also run low octane gas and was almost on empty at the time. Anyway I guess it is a waiting game. Too bad as I think the ETS recall expired last month for my car.