Engine Management light fault code help

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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RS6Rottweiler
2nd Gear
Posts: 152
Joined: Tue Sep 03, 2013 11:02 am
Location: Kirkcaldy, Fife

Engine Management light fault code help

Post by RS6Rottweiler » Wed Oct 11, 2023 4:47 pm

Hi looking for some help with an engine management light fault.

There is two fault codes coming up which are as follows:

17831 - Secondary air injection system; Bank 1
P1423. - 002 Insufficient Flow - MIL ON
17819 - Secondary air injection system; Bank 2
P1411. - 002 Insufficient Flow - MIL ON

Any help with what is causing this would be greatly appreciated, the engine appears to be running okay, but engine management fault light on with the above codes from VCDS

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Shoppinit
Cruising
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Joined: Wed Dec 31, 2008 6:24 pm

Re: Engine Management light fault code help

Post by Shoppinit » Wed Oct 11, 2023 8:06 pm

Sounds like the electric SAI pump. Probably full of water. Open it up and have a look.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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