hello i was just wondering if anyone could help me out please,
currently getting fault codes 480A and 4d03
480a -DDE PARTICULATE-FILTER SYSTEM
4D03-DDE EXHAUST BACK PRESSURE SENSOR
if i replaced the exhaust back pressure sensor does this require calibration or anything
or if someone has had similar issue if they could advise on what they did please
thanks
BMW E91 330D 2011