2004 Audi S4 check engine light after oil change
Yesterday i took my 2004 Audi S4 into the local lube depot
to get an oil change. Less than 2 miles after i leave, the car
starts misfiring randomly when i start it and the check
engine light turned on. one of the times i started it the
check engine light started flashing so i turned the car off
and turned it back on and it went back to solid. my car ran
perfectly fine before the oil change. what could have
happened?