I keep getting these codes. Within a 20 minute drive it can come on, go off, and come back on. It just comes on when it wants to. Mods are MPX catless dp, trifecta tune, and k and n sri. The car seems to run a bit rich at wot which could be normal with the tune. I've noticed on a NLS from 2nd to 3rd with the tune on the pop is followed by a black puff thats visible from the drivers seat through the mirror. What could be causing the codes?

 

Your catless dp. Your tune did not disable the cat codes.

 

https://www.cobaltss.net/forums/2-0l...49/index2.html

 

I have a defouler on my dp wouldn't that keep it from throwing those codes?

 

No, the defouler is too long. Read the code.

"Slow Response Rich to Lean Sensor 2"

It is getting too little air.

 

And the black puff of smoke is normal from being catless,

 

I'm confused do I take the defouler out? Whats not getting enough air the 02 sensor? As in the exhaust isn't close enough for the sensor to read?

 

The ECM detects that the time for the sensor voltage to transition from 0.4 to 0.2 volt exceeds 0.4 second. It basically missed the timeout window when you pushed in the gas pedal and the computer wanted a certain input from the O2 sensor and didn't get it. It could also mean you have a blown head gasket or a cracked ceramic in your O2 sensor, if that makes you feel better.

 

I also keep getting this code, well my Aeroforce Gauge says P0131, but Firestone says it's P013A, so I'm getting a new sensor put on.

Hopefully this fixes the problem on my ZZP Spun Metal Cat.

*Edit*

NM, they wanted $360 for it so I told them no!

 

Can someone tell me the PN for the sensors that would trigger the CEL P0131 and P013A?

 

I get the same codes with my zzp catted dp and hp tune. Any solutions yet?

 

You technically don't need that sensor. You could either buy a new downstream sensor off of rock auto.com or have your tuner disable all codes related to that sensor.