P219a check engine light?!
After I installed an off-road x pipe, I got a p219a code for AFR imbalance bank 1. Has anyone ever dealt with this issue? I’ve seen a few posts with out solution.
Some background info...
2014 5.0 20k miles. Only mods are the x pipe and BAMA tune. That’s it.
I’m able to keep the p0420 / p0430 cat efficiency codes away with the rear o2 spacers/ defoulers. The code initially appeared right after the mid pipe install while on stock tune. So I got a tune from BAMA and the code still came back. Verified no intake or exhaust leaks. Switched rear o2s left to right and the code stayed on bank 1. I thoroughly data logged with BAMA and they said everything looks great.
Any input would be greatly appreciated!!!