I recently did a light mod to increase the airflow from my throttle body and a few weeks later, my check engine light came on with a P219A code. This is an air / fuel imbalance. It doesn't specifically say that the car is running lean but I have to believe that's the issue since that's the modification I did. I loaded the old tune back in without that change and now I want to clear this code so I can make sure it doesn't come back but both the VCM Scanner and my handheld ODB2 code reader say it's a permanent code and cannot be cleared.
How do I wipe this code out so I can see if the issue returns?