Codes when installing v2 won't clear
Posted: Fri Aug 04, 2023 11:36 pm
I just installed the stage 1 map on my 2021 NXS and got 4 codes after the initial install. Did the process of clearing outlined in the instructions but was left with 2 codes that will not go away even after multiple clearing attempts. Codes are p04a0 and p0476 which have to do with the back pressure modules. These codes were not present before installation of the tune. Other relevant info is that the car has a Fabspeed catback and the check engine light isn't on even with codes still showing. I've driven the car and everything operates as normal.
Any else have this issue or advice on how to resolve or if it's actually an issue?
Any else have this issue or advice on how to resolve or if it's actually an issue?