Whats up Guys,

Last weekend I installed my Cobb exhaust and Test Pipe. I also installed a o2 Sensor CEL fix. After driving around for a few hours My "Service Engine Soon" light poped up. I checked the code and its saying Low Voltage in o2 sensor. I cleared the code but it poped up again. Any ideas how i can fix this.

The code that its reading is PO137.

This is the picture more or less how the CEL fix looks like.



Thanks,

 

Damn, no one had this happen to them?

 

Which o2 fowler are you using, the left one or right one or both?

I currently have the L shaped fowler and have been using it for a long while now.

I did throw an o2 code before because I had a bad exhaust leak. I fixed the leak and it fixed the problem. So check and make sure that you dont have any leaks before the o2 non fowler. If you, do it will throw an CEL because of air leaking in and triggering the sensor. Remember the non fowler still allows some exhaust to reach the o2 sensor, but a leak will affect the a/f ratio and trigger a code.

 

For what its worth, I installed the Cobb turbo-back exhaust last November, and had a P0420 CEL code. I fixed it with the same 90 degree anti-fouler you have pictured. Never had another CEL since. I know your code is different, but I doubt that its the exhaust or the anti-fouler.

 

hmm i dont have a gasket between the downpipe and the test pipe.. maybe thats what it is.. I forget what the hight heat paste that i used was.

 

Bump..