The engine code P228D has come for the powertrain problem of the engine and it needs solution for running the car engine properly. The automobile dictionary meaning of the code is found online and it is available for free. Do not use wrong meaning of the code for solving the car engine problem. However, do not drive the car with the car engine problem. However, the problem of the car engine is found in the powertrain and this problem is easy to resolve. No part is necessary to replace or change for solving the problem. When the car engine is ok, a test drive is recommended.