Hello all, I recently got a P0137 code that comes and goes. It started a couple days ago. Mods: MXP Testpipe with T1R O2 Fix V2 (the L shaped one). I'm unsure what to take of this CEL. Could it be a result of the winter temperatures I'm recently experiencing? What does this code exactly entail. Also, stock factory tune

 

Its your Test pipe throwing the code.. i have heard of people using steel wool in the 02 bung to fix the code.. there are alot of fixs for test pipe issues. Just a bit of research.

I am running the exact same code right now with my test pipe.. Just havn't fixed it yet.

 

I see you're in Canada as well, I think this might be due to a temperature reading - Its below 0C nowadays so I think when comparing temperatures the O2 is sensing that one is significantly colder than the other. Any opinions on this?

 

-28C all week here oem exhaust. no codes.

 

I'm running a testpipe which is spaced out from the exhaust flow using the T1R O2 Fix/Simulator V2, which spaces out the sensor a decent distance so it might get colder exhaust fumes there