Quote:
Originally Posted by Muzna
okay....so can you now explain to me how the O2 sensor and the catalytic converter are related?
what does the catalytic converter actually do?
|
A cc is just a device that is environment friendly and produces some chemical reactions by which the toxic products of your exhaust combustion are broken down to less harmful substances so that the air you and I breath is cleaner. It doesn't impair the cars operation in any way, though again your car might fail the emissions test (I live in a state where we dont need to do it)...
That guy diagnosing your car, I wonder what type of OBD2 reader (the device used to connect to the car and read codes) because the codes for the O2 sensor and the cat conv are different. Sometimes they put a second O2 sensor after the Cconv, because of they are showing the same O2 proportion, that means your converters not working right. Thats when your light turns on and the code should correspond to bad cat converter. So in short, you should ask him what code the car is spitting out for the check engine light exactly and what it corresponds to because it would really suck if you get something changed, which really wasnt malfunctioning in the first place.