just recently had a problem with my exhaust, it started blowing so i took it apart and refit the whole thing.
stopped blowing but now my eml came on.
i remembered this happened with another car i used to have and all i needed to do was clean the sensor so i did this and still the eml comes back on after i reset it.
i have had a little look through the internet and people say check the voltage on the sensor. i bridged the wires and checked them whilst the car was running and i did get some readings off all the wires.
i also hooked the car up to my friends auto data (on his comp) and it showed this (view pic)
bit lost now with what the problem could be..
do you think it will be that the sensor is fuxxed so i will need to change it or is there anything else i can do.