I keep getting a engine fault reduced power on my 2004 e60 530d.It happens most of the time when starting the car.
When the message appears engine runs as normal,no difference in power.It will happen also if I turn the key to position 2 without starting.
Can any shed some light on what i can check.
The error code is not held when I run a computer test on it.

What can it be,

High pressure fuel pump?
Some sensor
something else

anyone have the same issue and what the fix was

Thanks in advance

Cheers Romal

 

hi matey,
ive just had some problems with my 530d also regarding a loss of power, i had it with BMW and they diagnosed the problem as a faulty turbo, the symptoms were as follows - no dash warning signals, lack of power just before take off, severe lag in the accelaration after a good run at speed, i had a mass air flow replacement, and then inlet manifold gaskets replaced and then finaly the turbo, costly.....