I know there have been many treads about P0411 and adding intakes. I hit an armadillo a few months ago and recently got my bumper, radiator, and ac condenser replaced. Well a couple of days later CEL. P0411. I have checked every hose that I can find and still no luck. I can reset the CEL with my OBDII reader but it comes back in a few days.

Also an interesting note is while my car is idle, the heater does not blow out hot air. Once I start moving and have a few more RPMs there is hot air coming out. The only thing I can think of is that there is a hose pinched somewhere and it has to have the RPMs up to make it past the restriction. Again, I can't find the problem.

I remember a post that had pictures of all the hoses for P0411 but I have searched and could not find it.

Can you guys help me out. It sucks to go out and start the car in the cold to warm up, and the heater not work until after I start going.

Thanks,
Dale

 

do you have a helm's manual?

 

Don't have a helms. I have been seriously thinking about getting one for awile now. Probably a good reason to break down and buy one.

 

its the vacuum hoses of the secondary air injection system...

or the air pump of that system, or the connections related thereto.

 

I was hoping for some pictures (searched but could not find of vacuum system connections) or some insight into the heater problem, not a description of the CEL.

 

Being that the air bump is directly behind the bumper, the problem may be there.

Be sure the white check valve (1) is going the right direction...

 

Yep that check valve is what gave me my code. Billman showed it to me when I attended my first car meet. Just reverse it and voila! No more CEL.

 

sorry.

 

Thanks guys. I will pull the bumper off this weekend and check.

 

make sure that its actually plugged in too. That was my problem