Hi
my 1.6hdi is low on power at acceleration with no dtc but every now and again I get underboost code with a service now light?

iv ran live data and the egr command is constantly at 22.4% never changes could this be a cause ?

 

Have you checked the boost pipes. The one where the throttle body is on top of the cam cover split underneath.

 

hi
thanks for the reply ,I have check all pipes but Iv noticed that using live data the absolute throttle position doesn’t move under load so thinking new throttle body is needed?? As I think position sensor is attached