Code 141

2002 3.4 prerunner, i just replaced the exhaust pipe, muffler and tailpipe. i noticed i have a slight leak downstream of the cat. now getting the 141 code, could this small leak trigger the code? the gasket was missing in the kit i brought, need to order one soon. any thoughts?

 

Its possible. How far downstream?

 

between the cat and 02 sensor pipe.

 

Ya you need t o fix that first.

 

thanks for your help Jon!

 

i had that code once and it was due to the fact the the o2 sensor was loose. after it was correctly screw it in the code was gone after 5 mi.