Nevermind - I saw the thread that mentions that permanent errors aren't cleared.
Hi guys,
I've been a little lazy tuning this vehicle, but I have a 2011 CTS V that has primary cat delete with the secondary o2's still physically connected.
I've set all of the Sensor 2 DTC's to no error reported, and have removed post o2 test, and Catalyst Test.
I'm still getting P0420 and P0430 codes (permanent) that continue to show up when I scan DTC's. There's no MIL light on.
I must be an idiot and forgetting something.
Last edited by Overclock This; 01-26-2017 at 07:54 PM.
Reason: Figured it out
You still have all the ses enabled .......uncheck the boxes that correspond to the ses for the rear o2s not just the efficiency ses and try again. Good luck
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