Drove through so,e grass, uneven terrain...not my best decision...check engine light came on..I had it read, said bad o2 senser...car was behaving as if it was running lean...well ****...this sucks but at least I know what it is....drove around all day today no issues...light still on...had to run to kwiki mart half mile away..on way there...light wasn't on.....on way home...oil light was...crap...I checked the oil which I had changed less than 1k...it was at appropriate level...does anyone have any idea or similar experience that'll help me figure out what's going in