About code P1423 again
I researched the code and came to some "Seconday injection pump Bank 1 airflow too low", and some 4.2L and 2.7L engine photos on how to fix it. But the engine doesn't look at all like mine (2.8L), so I couldn't do anything yet.
Yesterday the MIL light went off by itself and I quickly went to get the sticker. But I feel the problem (if it was any) is not solved.
Please share your experience with this P1423 code.
Check out these posts:
<a href="https://forums.audiworld.com/a6/msgs/305914.phtml">https://forums.audiworld.com/a6/msgs/305914.phtml</a>
<a href="https://forums.audiworld.com/a6/msgs/342623.phtml">https://forums.audiworld.com/a6/msgs/342623.phtml</a>
- Check fuse for Secondary Air Injection (AIR) pump
- Check vacuum hose setup
- Check hose setup from pump to combination valve for Secondary Air Injection (AIR)
The pages to troubleshoot this are too many (and likely illegal, without permission) to reproduce, here. If you're seriously interested in troubleshooting stuff like this yourself, I strongly recommending buying the manual on CD.
Hope that helps....
Bill





