Checking Intake System

Check the intake system between the turbocharger (TC) and the throttle unit. Check for air leakage.

Check particularly that the boost pressure sensor is correctly installed and has not come loose.

Check that the non-return valve to the crankcase ventilation is positioned correctly and is not damaged.

Try a new boost pressure sensor if no fault is found during the above fault-tracing.

Other information 

• see AIR LEAKS IN THE INTAKE SYSTEM, CHECKING
• see TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)
• see NON-RETURN VALVE, CRANKCASE VENTILATION

• Continue 

  Refer to VERIFICATION