mercedes cls 320

[msienicki]

Hello, I have mb with this faults, I check sensors and I think are ok. somebody had this same problem?
2526 -002 Test signal cable to component Y77/1 (Charge pressure positioner).
Short circuit to ground
2530 -002 Check component M55 (Inlet port shutoff motor).
Short circuit to ground
2527 -002 Check component Y27/9 (Left EGR positioner).
Short circuit toground
2376 -001 Check component N3/9 (CDI control unit). Actuation M16/6 (Throttle valve actuator) Voltage is too low.

thanks

[mercis]

yes,all 642 engine have this problem
turbo geometrie cant rigth move

[msienicki]

can I fix self or better is say to guy go to mercedes dealer. thanks for answer

[mercis]

warning,you need new exhaust manifold
bevore change turbo

[Dajan2009]

Warning, all these are on the same fuse. It could be any of them, but most common is a M55 (Inlet port shutoff motor). If it is oil on it then you have to change it. Find a blown fuse in front SAM, unplug Y77, Y27/9, R22, and try it, if it blows again unplug M55 and try again. If You need to exchange M55 You will need a new one and gaskets for remove/instal of the turbocharger. Usualy beeter to repair at a dealer, or maybe You know some guy working at the dealer to do it at home.
No big deal, but not for amateurs.
Cheers:sleep: