My CEL came on[:@] and besides leaking oil from the headgasket i checked the engine codes i got 15 No vehicle speed sensor signal which i cant do anything nor care about right not and 21 02s sensor problem (oxygen sensor), upstream or down stream. Now my car half the time or more when i come to a complete stop driving she stalls out. is that because of the O2 sensors? and is this upstream or downstream? I noticed the downstream is located on the catalic converter. Now drove right over a skunk the other day, could he of moved it out of place and this is whats causing it. Im gonna go mess around with it right now. Feedback plz.

 

skunk might have just ripped the wires.

 

it sounds like the o 2 sensor because mine did the same thing when mine failed ...check the wires first on the lower