I was reading about honda oxygen sensor in the workshop manual and they recommend they are replaced about 80000 ks. Has anyone got any more info on this or replaced one before? What exactly is their role in the scheme of things? By the way I see there are after market one available on e-bay. About $54 for a 3 litre. Thanks in advance.

 

it reads the amount of air fuel being burned coming out of the car....if getting bad gas mileage i recom. changing it out...