Hello, I have a ford mondeo mk4 2.0tdci 140km 2008R for some time I have a problem with the engine while driving, the emergency mode cuts off, the turbine drops, the engine power drops and turns to a maximum of 2000 rpm. I was pulled up under the computer, the computer showed the error of the turbocharger variable geometry sensor so I replaced the sensor that is responsible for the turbine geometry but it did nothing, so I went under the computer again and this time showed the error P0234 TURBO COMPRESSOR / EXCHANGED PERMISSIBLE VALUE OF ENGINE 'A' the mechanic said that for a 100% turbine for replacement so I replaced the turbine but I still don't know what to do