96 Q 45 o2 sensor262304

[richard nemetz]

How do you check if the o2 sensor

[elwesso]

Best to just replace it with time. Theres not a really good way to check them, but on a 96 theyll throw a code before they do on earler Qs.

If its been over 100k since theyve been replaced, time to replace!

[richard nemetz]

I installed a new post cat o2 sensor in my Q, is there a way to check to see if the harness is good and also check the new o2 sensor?thanksrichard

[maxnix]

Observe the duty cycle on a scope. Bet it is substantially different from the one you didn't replace.