Ok so typical vw. Cel..... i had a cel for primary o2. Upstreem so i got a new sencor, great. No cel, then a day leter. Downstredm went out. So i got a new one, now. Its 2 days old and cel for o2 s2. Low voltage.... ik the sencor is good. Is there any typical issues with this kinda thing? Commone places for wires to break or get worn out???? Between ecu and the plug for the o2. Or common fixes???? Low voltage so i know its not the sencor as its brand new and will work with no cel for around. 25 miles then cel pops up