I have a 2005 limited coupe I change all oxygen sensors and P0154 code appear Does anybody could help me to diagnostic?

 

https://www.crossfireforum.org/forum...ouble-code.pdf
This is the PDF on this forum for the codes I looked it up and it looks like you were on the right track. P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1).
What code reader did you use? Did you clear the code after the repair?

 

Hello Doc78 First I found O2 malfuntion and changed all sensors (bank 1+2 up and downstream)clear codes and work fine but after a month appear code P0154 and sometimes comes off and on Clean connection due to possible rust but same result Is there any other possibility I used an aftermarket sensor but I replace bank2 sensor1 w a brand new Bosh I appreciate Ur help Thanks