zkzkd

on my ml320, i got a check engine light with 2 fault codes. One fault code was B28/8 (pressure differential sensor) and the other code was B5/1 (charge pressure sensor). after reseting the fault codes, the B28/8 code came back on again. when the engine is warm, engine goes into engine protection mode (wont go over 50km/h).

any idea what is causing this and how to repair it?

thanks for your help