This is the prob, my engine light keeps coming on and I keep resetting it with, one of those high dollor computer programs " What a waste of money" for a bemmer! Unless you have a program for bemmer it dos'nt get you far.
Ok I took it to the dealer and for free they hooked it up to the comp. and this is what it said " (256) F6 Flow rate, sec. -air system, too low, bank 1 (OBD11:P1423; EU111: P0410) Secondary air throughput too low, bank 1 ."
Now I know why my light is on, The blower ($230)or valve ($100)
The blower puts air throu the exaust during warm up, thay said.
The ? is how do i know which of the two is the real problem.
or I can pay A guy $ 100 to tell me " yeah-right"
oops I almost forgot it is a 1999 323i with 124000 miles.

" I hate that stupid light "


Lenny from Texas "Ye Ha"
(cow-boy who drives a bemmer)

Hey Leonard,

First off . . it's Bimmer . . . . and I would say find an independent mechcanic to work on your car. the stealer will rape you on labor charges alone.

I found one in my Bimmer Magazine . . it's in Houston . .

MPH Automotive Service, Inc. - 281-579-8885

Good Luck ! ! !

When the secondary air valve goes bad it lets exhaust gas and condensation go back into the air pump which causes the pump to fail. Thats why they are replaced together.