Hi,
I have a Ml with a om628 engine and the idle is oscillating between 600 - 850, usually when I start it up when tha engine is hot. It really rarely hapens when the engine is cold.
I have access to star and only engine related code I get is:
P2027-128 Check component Y100/1 (Right charge pressure positioner). Positioner signals fault (message through ground keying).
And this comes a week later when I clear the codes.
I checked the realtime values with star from both positioners and mafs. The positioners were same 70%, in mafs there were slight difference. I am suspecting the right maf but since they are over 200 € / piece I dont want to buy them if the fault is somewhere else.
Other components I should check?
I have a Ml with a om628 engine and the idle is oscillating between 600 - 850, usually when I start it up when tha engine is hot. It really rarely hapens when the engine is cold.
I have access to star and only engine related code I get is:
P2027-128 Check component Y100/1 (Right charge pressure positioner). Positioner signals fault (message through ground keying).
And this comes a week later when I clear the codes.
I checked the realtime values with star from both positioners and mafs. The positioners were same 70%, in mafs there were slight difference. I am suspecting the right maf but since they are over 200 € / piece I dont want to buy them if the fault is somewhere else.
Other components I should check?