Maximize Engine Efficiency and Reduce Emissions with Secondary Air Injection Systems

Code P0411: Secondary Air Injection System Incorrect Flow Detected ... Trouble code P0411 points toward a problem involving the flow of fresh air into the engine ... The secondary air injection consists of an air pump (that black plastic cylinder-shaped thing next to the exhaust side of the engine) and a valve. It should do as the SAI is designed to clean up the exhaust during the warm up phase. The MOT is done on a fully warmed up car, so it should ... The purpose of the secondary air injection system is reducing hydrocarbon and carbon monoxide emissions that result from cold start conditions. What Does the P0412 Code Mean? Diagnostic trouble code (DTC) P0412 stands for “Secondary Air Injection System Switching Valve 'A' Circuit.” ... Hey Jim, The information I see is to contact your authorized Mercedes-Benz dealership for assistance or additional information to this warranty ... If you're seeing this code, it means the powertrain control module (PCM) has identified that the SAI system is dealing with insufficient flow. Key Takeaways: · The P0412 code refers to a malfunction in the secondary air injection system's switching valve circuit. · Common causes of the ... It's pretty simple. One takes in air and is connected to the atmosphere. The other pushes air into the exhaust. Make sure the intake is long ... I'm reasonably sure my secondary air injection pump went out. I was having the signature whine that would come on at cold starts and would ...