Did some offroading and got in some water...not to bad. Engine runs but it starting idling a little rough at stop lights. Today it threw two o2 codes twice (bank 1, sensor 1) said running lean, then "no activity". Checked the fuses under the hood...all good. Any chance water shorted the sensor and it ruined it? Just replaced them 6 months ago.

(possibly related.....right after running through water, got a cyl 1 misfire code, but it stopped after drying a few minutes.)

 

possible. i'd dielectric the plugs and make sure they are secure

 

checked connector on sensor 1, cleaned it and put di-electric on it....still throws code. I'm guessing sensor was ruined by misfire or getting wet. Ordered a new one and putting it on today.....will update.