CAMARO6 - View Single Post - Stainless Works Cat-back exhaust and error code P0420 '16 2SS M6 non-NPP. any ideas?

Tread · 09-17-2016, 01:00 PM

I've got one. I looked at the o2 sensor voltages and wasn't able to see any differences.

09-17-2016, 01:00 PM	#3
Tread Drives: 2016 Black 2SS Join Date: Jul 2013 Location: St. Louis, MO Posts: 6	I've got one. I looked at the o2 sensor voltages and wasn't able to see any differences.