I have the excellent elm 327 blue tooth OBD II reader and an android phone running the app torque. I had a CEL come on for this sensor once and ran through another drive cycle and the light cleared it self. I thencleared the stored code with my OBD tool. I have never had it come back on or even store a code since. Also my OBD lets me look at the voltage coming from the sensor and it seems normal. If the codes come back after they are cleared some diagnostics would be a good idea.
On the road in my Rav4 since February, Traveling, Volunteering, Camping and also enjoying beer bikes and bacon. Check out the blog www.servicedriven.org