looking for pointers on this fault please

Codes read on Autel

ABS light illuminates after short test drive

Power steering functions but heavy

Fault codes



ABS system

- 6F56 no message (engine control) reciever DSC ,transmitter DME-DDE - present
- D437 Dynamic stability control (dsc) : PT-CAN communication errror - present

Engine ECU

4B4C Digital diesel electronics (DDE) : message (AFS torque request) present

Thanks