Hi All,

I have a 2007 e350. I am getting code p0410. I have changed relay, pump, right and left check valves. After changing valves. It appeared again after 2 days during the first start up in the morning. Any suggestions?

 

How about airflow (different engine, same principle): https://www.engine-codes.com/p0410_mercedes-benz.html

 

I check the hoses and replaced those two shut off valves.

 

I have the same issues, replaces Air pump, relay, fuse, air injection value and still codes comes back.

 

So I tried cleaning the air ports for the check valves. I tried several methods suggested in the other threads. I poured b12 chemtool down the port. It cleared it for a couple morning starts. It appeared again. It is saying airport bank A. Which side would that be?