guys ,my car is showing a fault code ,can anyone tell me what needs replaced p0411 says secondary air injection system incorrect flow detected ,is this a sensor? thanks

It could be the secondary air pump, the plastic cannister that resembles a hair dryer on the passenger side front of the engine. Check to see that it is working and that the pipes are OK. It works for a brief period when the engine is started from cold.

yeah one of the press-on hoses may have come detached, give them all a good jiggle.

other than that it could be the pump itself or the combination valve, but i've never heard of a combination valve going.

pumps are stupidly expensive new, so fingers crossed for you mate