I replaced the sensor as was indicated by the code identified. I removed the old sensor. Thoroughly cleaned the tube it attaches to and installed the new sensor. About an hour later the code came back on. I then cleaned the old sensor with WD-40 and some q-tips and reinstalled it. Two days now and the code has not returned. I am still giving 3 stars as the service from the team there is second to none. Super fast shipping.