Waiting for some new
Join Date: Mar 2008
Location: United Kingdom
Re: Motor Control System Failure
Got my 156 SW back today after the Bonnet fiasco.
With regard to the Motor System problem...
The garage (Main Dealer) suggested it is the Turbo over pressurising!
They checked the Air Flow Meter which was OK, the EGR Valve??? was also OK, so they cleaned the Turbo Boost Pressure Sensor.
I'll keep you informed if the problem returns, if it does return, they will replace the Turbo Pressure Sensor, because the EGR Valve is new!