Looking for some help. I have this po141 CEL code. Wanted to know if this is my CAT. Or Mass air flow sensor. I also wanted to know if you guys with the straight pipe and No CAT do you have the same CEL? Does it effect the performance of the car?


RAT

 

i think its from the 2nd O2 sensor..

 

Most likely secondary O2 heater is open. You can check it with an Ohm meter. Check for continuity on the 2 black wires.