That happened to my gsr twice and I'm almost positive it was my gas cap. Try opening it and then closing it. The first time it came on was the day after a gas fill. I went to autozone and they cleared the code for me. If you have a faulty gas cap then you'll get that code. Then a month later it came on again. I just cleaned the rubber seal around the cap, pulled the ecu fuse for a 10 mins and it never came back again. Remember I think it's suppose to be like 3-4 clicks and that's it.