BMW 330d M57 engine limp mode symptons

[teerak2uk]

Just wondering if someone has had this before

Car drives well no dash lights showing but sometimes is like not turbo not boosting and
cant find any faults apart from this one but clears for a while 3F53 vehicle speed signal

but also cruise control indicates to be working on the dash but is not working​

[ollync]

Try to pull out connectors from some sensors or actuators ( Maf, airmassmeter , turbine actuator etc) and see if its showing any related error codes. Maybe somebody erased some DTC tables.
Look at real time measuring, airflow and boost pressure, high fuel pressure and compare.




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