C220 cdi 2005 fault code p0069

[merc85]

The car go's into limp mode until switched off then restarted and all fine but can happen multiple times.

Fault code is P0069 does anyone have a idea what this could be

Any help much appreciated

Car has had new Oe MAF sensor and Map sensor Genuine items new

 

[Herishi]

P0069 is a MAP sensor error according to t'internet

 

[merc85]

Car seems to be running to much boost imo, If you boost it and let you foot off you can hear what sounds like waste gate "chatter" These cars dont have a wastegate they are varible vain turbo's which control the Charge boost by opening the vanes on the turbo.

If these vaines are not opening it will cause to much boost and create the "chatter" sound , thats my thinking anyway.

Turbo actuator or IAT sensor not talking to the actuator could be at fault as the car any does it mostly from cold.

Vanes are free and not sticking

Could do with someone who knows these better lol