Secondary Air Injection Cutoff Valve

[thstone]

I have been seeing both the P0410 and P1411 codes for about three weeks. You've convinced me to have my local shop do the work.

[thom4782]

I chased the P0410 and P1411 based CEL problem in my car for a year. I took the car to two independents. The first replaced a lot of parts for $$$. The problem persisted. The second spent a number of hours smoke testing and ultimately suggested that I take it to the dealer. Finally, the dealer found and solved the problem.

I think the dealer succeeded because it tested the system to see if it could hold a vacuum in the first place. It turned out in my car that the vacuum reservoir was the problem area and the CEL problem disappeared once it was replaced.

My experience suggests that one find a way or have a shop test to see if the secondary system can hold a vacuum before beginning to change out parts. If the vacuum can't be held, then it's likely a tube, connector, or the reservoir is where the problem lies. If a vacuum is held, then the seconday air system has a bad valve, is clogged or something else outside the seconday air system is causing the bad readings.

[Jager]

I mustered-up the courage to repair my SAI system… again. Armed with all the SAI parts in my arsenal, nothing was going to stop me now. Since I was going to dig-in this deep I was replacing all the SAI components.

First had to remove the rear deck cover, I have never removed this before.



With the deck lid out of the way it made it easier to access most areas topside of the motor.




Removed the throttle body, cross-over tubes, the oil fill tube, and the alternator, ripped-out the SAI cut-off valve and changeover valve and discovered this:




It was a broken vacuum line! #^%$^ %*^% @$#)!! The Teklan tube got brittle and broke between the changeover valve and the vacuum reservoir.


Here is a picture showing the location of the SAI components. See where I repositioned the changeover valve, this seem to be more natural position and took strain away from the feed line from the vacuum reservoir, plus now it will be easier to troubleshoot in the future.

[psquared39]

getting the 0410 and 1411 codes, clear them, back 8 days later... looks like I have to dig in to this. :ah: