P0134 oxygen sensor high/open front. Getting the check engine light code after front pipe came loose. Was riding home from work the other day 40miles. About half way I notice lots of popping/ back firing than usual. Got home seen front pipe came loose. Bolts where gone. Had to replace the studs from wear of the flange rubbing. After getting the job done I cranked it up and check engine light comes on. I have the v&h fuel pack which tells you the error codes. I delete the code and pops back up. Checked the sensor & look ok. Any ideas?

 

Replace the O2 sensor. Looks OK, doesn't do it.

 

ditto, one of my sensors went back from just changing the exhaust, very delicate sensors, thank christ they are cheap. I believe i paid $36 at the dealer