Whats up guys fairly new member here and newbie owner . I recently got the dreaded check engine light on my 07 Rx8 which I've owned for a year and I've never had any problems with it other than the now replaced metering oil pump. So now the check engine light turned on again for the code P0134 Which is O2 Sensor Circuit No Activity Detected ( Bank 1 Sensor 1). Do you guys by any chance know where i could find a good brand of cheap and reliable O2 sensors to buy? I would very appreciate it.

 

Not saying it's not a broken sensor, but have you checked all your connections and fuses?