CEL is on.
code is P0141
02 sensor heater Circuit Malfunction
(Bank 1 Sensor2)

can someone tell me which 02 sensor this is..
front or rear...i recently did a header install and manhandled
the 02 sensor on the j pipe.
i am sure that this is what the problem is..but i noticed that there is a second sensor on the cat.

 

sensor 2 is the rear

 

u really think the rear 02 sensor is bad?.
that is going to be tough to get out.
what would you do with this CEL code?.