Possible Causes
Hoses incorrect connected, disconnected, blocked or leaking
Pressure Unit for Turbo Charger defective
Solenoid Valve for Boost Pressure Control (N75) defective
Possible Solutions
Check Hoses
Check Pressure Unit for Turbo Charger
Check Solenoid Valve for Boost Pressure Control (N75)
Check Basic Setting > MVB 011
Possible Symptoms
Engine Jolting
Increased Fuel Consumption
Poor Idling/Jolting
Reduced Boost Pressure
Possible Causes
Mass Air Flow Sensor (G70) faulty
Fuel Pressure too Low
Leaks in Intake Air System and/or Exhaust System
Injector(s) faulty (i.e. coked)
Possible Solutions
Refuel Vehicle
Check Fuel System Pressure
Check Mass Air Flow Sensor (G70)
Check Intake Air System and Exhaust System for Leaks
Check Injection Quantity
Check Injector(s)
have u checked these ??