mahy

My car is MB C250 CDI 2010. I have noticed DTC code P0238 and further analysis shows that in ODB2 data stream tha ' relative throttle position ' shows 100% all the time while engine is running idle. The car dies In any acceleration situation but still I'm able to drive the car 'manually'. Gas pedal values seem to change according to pedal position from about 6 to 85 %.. Throttle position reading is related to faulty boost pressure sensor..After boost pressure sensor was replaced car accelerates normally and 'relative throttle position' reading shows values around 47 % in my case.