VR6 Forum

Hello!
I have this problem on both the cyl banks:

17819 2 P1411- Secondary Air Injection System; Bank 2: Insufficient Flow
(Limit value not reached static)

17831 2 P1423 - Secondary Air Injection System; Bank 1: Insufficient Flow
(Limit value not reached static)

I keep getting it and resetting it by my machanics... did it 4 times in the last 2000km...
What can cause this?
Thank you.

There is a mechanical valve what could be stuck, or the electrical air pump is not working.

Check if the valve is working, but common would be that the pump is done...

Thank you so much, moderator!
Probably, I will ask my mechanics to do the work in june, while they change the oil.
Also, I had today they idea to ask one of them for an engine flush. It's something new for me, I discovered that procedure last week. It's About adding some cleaner into the old oil and make the engine run for several minutes to clear the inside of the engine from the sludge (my engine is 180000km old, towing a 3tons van); then the old oil is thrown away and they put the new engine. Many years ago it was done by putting DIESEL into the oil... today VW has it's own product.
I don't have problems on the engine and I would like to do it to be safe: prevention. Do you think it's a good idea? It's not an harmful idea, isn't it?

Ist kein Fehler.
Speziell, wenn der Motor mit Longlife Wechselintervall gefahren wurde.
Geht meiner Meinung nach mit Diesel gleich gut; der Ablauf ist vielleicht etwas anders....

wasmachen hat geschrieben:Ist kein Fehler.

Ok, thank you for the rassurance, I will ask the mechanic to do it when I change the oil; so all the eventual sludge will go away. Reading my service book, it used to be mantained following the long life service plans, upon the WIV Wartungsintervall-Verlängerung, as you pointed out.
The machanic will use the official VW flush product (it's an official vw nutzfahrzeuge service point).

I will get the oil changed once time every year, instead.