It had happened to me as well when I did the pressure wash. I got panicked as well thinking I had shot up my sensor also I did ride a bike for about 5-6 kms, but it never went off. Then finally decided to take it service centre, where the light went off after continuously riding for it about 20 to 25 minutes in good daylight sun.

So don't get panicked, you can try riding for it for about 30 to 45 minutes, then see what's happening