Codes P1421, P0420, P0430
OK, getting down to serious diagonistics on the Bimmer. Last go around I had the following codes:
P1421, 0420, and 0430.
Hamfisted, recommended checking the vacuum lines for leaks. I've done this and replaced a few that were brittle but did not see any that were definitely leakers.
I did pull the Air Pump Control Valve and cleaned it. I tried pulling a vacuum on it with it off the car to see if it operated. It did not.
Could this be causing a problem with air being introduced to the car during start up and throwing the P1421 code?
I checked the board for P1421 and resolutions but the 3 hits only got me as far as how to read the codes, no real mechanical stuff going on there.