Boost pressure actuator problem

ANGAD

MEMBER
2011 BMW 320D
2.0L
4 CYL
TURBO
RWD
AUTOMATIC
18,500 MILES

Mt car is a 320d E90. I get an intermittent engine fault running on reduced power message. Took it to get diagnosed and the fault code DTC 4755 showed up mentioning boost pressure actuator. Position control. The mechanic mentioned that the drainage system was blocked and there was moisture in the ECU. Dried it out but the problem persists. Any advice please. Location New Delhi India.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,878 POSTS

Hello, there,

On the BMW there is a method which much be cleared once a repair is done like that it is called adaptation. Once cleared the computer will relearn and the problem should go away. Please let me know how it goes.

Bet, Ken