After buying my car i took it in for a new o2 sensor the day after and since then sometimes all three lights for tarmac gravel and snow stay on any ideas

 

it could be any number of things from what I understand, most likely a sensor. how many miles are on yours? I have 73,000 and my ACD pump actually just went bad(my lights are all on). $2100 part :O. I'll be cruising around an open center diff. for a while.

 

just hit 57000 but its only ocasional

 

mine was the acd fluid i had to have a new trans case put in and they only filled the reservoir so when i drove the lights came on half way home ended up no having enough fluid in it