[GP0256]

So I just finished a 2014 328i X drive with PDC in the front and the back as well as the back up camera. The car was totaled in the front and I needed 2 new PDC's as 2 were missing so I completed the car and sure enough, the back up camera works as do the steering lines while in reverse but I immediately get a orange triangle with the exclamation point telling me to take the car for service. Additionally, the faux car shows up on the navigation with the exclamation triangle shows in both the front and rear of the car.

I had the car at the stealership for a alignment and they told me it just needed recoded for a mere $160 because the car could not read the new PDC's I installed. That did not work but they kindly took my $ and told me tough crap. I am now asking the forum members who are knowledgeable for your opinions on what might be wrong.

So far I have done this:

-new front PDC wiring harness from BMW
-2 new PDC's
-unplugged all sensors and rep lugged hem in, both front and back
-checked all wiring and plug ends for anything out of sorts and it is perfect
-checked both front and rear fuses (all 4) and they are all good.

I appreciate your advice in advance

[GP0256]

Bump for some help