CAMARO6 - View Single Post - P0420 Catalyst System below threshold bank 1

KingLT1 · 12-07-2021, 07:16 PM

That code normally means there is a leak in the exhaust up by the second o2 sensor on bank 1. my guess the leak is at the slip connection.

12-07-2021, 07:16 PM	#3
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 7,629	That code normally means there is a leak in the exhaust up by the second o2 sensor on bank 1. my guess the leak is at the slip connection. __________________ 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel