How does the Mercedes Benz secondary air injection pump work?
Mercedes – Secondary air injection pump. It does this among other things by monitoring fuel trim and by identifying emissions changes then comparing its findings to an inbuilt reference map. From this it can conclude that the secondary air circuit is functioning correctly – engine management is happy!
Is there a problem with my Mercedes air pump?
If your Mercedes sounds like a a jet engine in the morning or a circular saw when you start the engine you probably have a problem with the Secondary Air pump – It might be a free repair or very expensive – Mark shows you the problem, the tools needed to fix it and how you might get it fixed for free under a little known warranty Loading…
What is the code for secondary air injection?
Most of them have the same setup. This repair was to resolve a check engine light giving code P0410 – secondary air injection malfunction. The beginning of the video, I explain background on how I knew this was the necessary repair in this case (P0410 is a general code which may be triggered by various causes). This is a common Mercedes problem.
How much does a Bosch secondary air pump cost?
A new secondary air pump from Bosch will cost in the order of £300 for the part alone and maybe £35 for the correct relay. The resulting maths is simple.
Mercedes – Secondary air injection pump. It does this among other things by monitoring fuel trim and by identifying emissions changes then comparing its findings to an inbuilt reference map. From this it can conclude that the secondary air circuit is functioning correctly – engine management is happy!
If your Mercedes sounds like a a jet engine in the morning or a circular saw when you start the engine you probably have a problem with the Secondary Air pump – It might be a free repair or very expensive – Mark shows you the problem, the tools needed to fix it and how you might get it fixed for free under a little known warranty Loading…
How does the secondary air injection system work?
The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system. An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module ( PCM) grounds the Air pump relay control circuit which energizes the Air pump.
What is the fault code for secondary air injection?
During the first few days of ownership the amber engine check lamp in the dash illuminated and stayed on. Plugging in the AUTEL diagnostics tool revealed a P0410 fault code relating to secondary air injection, so I set about troubleshooting and fixing the problem. Remove front section of engine cover by lifting up and pulling forward.
Where is the fault code flag on a secondary air injection pump?
Internal parts of secondary air injection pump. Obviously when you have completed the work you will need to erase the fault code flag from the ECU with a suitable code reader, in this instance I used my Autel. The standard OBD port is under the dash next to the drivers foot well, near the bonnet release on UK cars.
Can a 1.8T air injection pump leak?
This feature is not available right now. Please try again later. The secondary air injection pump can often leak on VW and Audi 1.8T engines. The leaking of this pump or other bad components in the secondary air system may result in fault code P0411. https://deutscheautoparts.com/catalog…
How to replace a secondary air injection pump?
Step 1: Locate the air injection pump. The air pump is at the front of the engine with the serpentine belt wrapped around it. Tip: Make sure there is a belt routing diagram under the hood of your car so you know how to reinstall the belt. If not, take a picture of the belt routing with your phone before proceeding further.
This feature is not available right now. Please try again later. The secondary air injection pump can often leak on VW and Audi 1.8T engines. The leaking of this pump or other bad components in the secondary air system may result in fault code P0411. https://deutscheautoparts.com/catalog…
Most of them have the same setup. This repair was to resolve a check engine light giving code P0410 – secondary air injection malfunction. The beginning of the video, I explain background on how I knew this was the necessary repair in this case (P0410 is a general code which may be triggered by various causes). This is a common Mercedes problem.
What are the components of an air injection pump?
The air injection system introduces oxygen into the exhaust engine at certain times to reduce emissions. Typical system components include the PCM, air injection relay, air injection hoses, valves and the pump. The air injection pump can be either belt driven or electric – for this article, we will focus on the belt-driven design.