My MB E320 got the P0410 code...secondary air injection system malfunction. The MB dealer changed out 2 sensors but the p0410 came back.


I don't know where the SAI System is located nor do I know what it looks like. I need help...>

 

according to AllData the SECONDARY AIR INJECTION PUMP is located on the back side of the air pump located in the front of the engine compartment just under the hood of the vehicle. And the switchover valve is located to the left of the air pump. The relay for the system should be located in the trunk just in front of the battery.