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Secondary Air Injection System Faults??

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B5crazy View Drop Down
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  Quote B5crazy Quote  Post ReplyReply Direct Link To This Post Topic: Secondary Air Injection System Faults??
    Posted: 16-Mar-2013 at 21:29
I recently got a CEL and after a scan found these two faults. I cleared them and have not returned in a week.

What should I do?

Mileage: 212750km/132196miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 07D-906-018-BDP.lbl
   Part No: 07D 906 018 AP
   Component:   B5S-4.0L-HS-LEG   5204
   Coding: 00172
   Shop #: WSC 78644
   VCID: 74ED9E404411BBB8354
   WVWLK63B84E298829     VWZ7Z0C8211297

2 Faults Found:
17831 - Secondary Air Injection System; Bank 1
            P1423 - 35-00 - Insufficient Flow
17819 - Secondary Air Injection System; Bank 2
            P1411 - 35-00 - Insufficient Flow
Readiness: 0000 0000
2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

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B5crazy View Drop Down
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  Quote B5crazy Quote  Post ReplyReply Direct Link To This Post Posted: 16-Mar-2013 at 21:36
Here is what I got off of the Ross Tech Site

17831/P1423/005155 - Secondary Air Injection System; Bank 1: Insufficient Flow
Possible Symptoms

    Malfunction Indicator Light (MIL) active

Possible Causes

    Fuse for Secondary Air Injection Pump blown
    Vacuum Hose(s) leaky or collapsed
    Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve leaking
    Secondary Air Injection Solenoid(s) faulty
    Combi Valve(s) faulty

Possible Solutions

    Check Fuse for Secondary Air Injection Pump
    Check Vacuum Hose(s)
    Check Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve
    Check Secondary Air Injection Solenoid(s)
    Check Combi Valve(s)

Special Notes

On vehicles with rivets holding the plastic body halves of the Secondary Air Pump together check to see if the rivets are falling out. If they have fallen out or are loose you may be able to bolt the pump back together if the motor has not failed.
2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

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J.Gioia View Drop Down
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  Quote J.Gioia Quote  Post ReplyReply Direct Link To This Post Posted: 29-Jun-2013 at 23:03
So what turned out to be the issue? I just checked the code for my CEL, and its P0491, which sounds pretty similar. And do you have pictures, because blinding checking hoses and valves is time consuming.
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  Quote J.Gioia Quote  Post ReplyReply Direct Link To This Post Posted: 02-Jul-2013 at 01:39
Originally posted by J.Gioia

So what turned out to be the issue? I just checked the code for my CEL, and its P0491, which sounds pretty similar. And do you have pictures, because blinding checking hoses and valves is time consuming.


Turns out that blindly checking hoses works. My CEL was from one of the two hoses that run underneath the air intake, in front of the engine was disconnected.
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