S4MarkS4

This is for a friends car, the VAG COM pulled the following code, which has triggered a CEL.

VAG-COM Version: Release 607.3-UD

Sunday,05,November,2006,15:44:11

Chassis Type: 8E - Audi A4 B6/B7
Scan: 01 02 03 08 09 0F 11 15 16 17 18 36 37 45 46 55 56 57 65 67
69 75 76 77

VIN Number: WAULC68E32A059612
-------------------------------------------------------------------------------
Address 01: Engine
Part No SW: 8E0 909 518 F HW: 8E0 909 018
Component: 1.8L R4/5VT G 0001
Coding: 0016701
Shop #: WSC 63351

2 Faults Found:
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 002 - Lower Limit Exceeded - MIL ON
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 002 - Lower Limit Exceeded - Intermittent
Readiness: 0000 0000


I did alot of searching and is the secondary air injection system fault most likely a vacuum hose going to the combi valve? Is there anything else that it could likely be? Or is it 99%of the time those combi valve hoses?

Thanks in advance, I appreciate any help as I am working on getting a Bentley manual so I can look myself ASAP.

Mark

A4Rye

could be a smog pump issue

Mrkrad

going under to the N249 and one going to the evap valve at the rear of the head and another i thik goes to N75 valve (DV).

they rot and leak and cause 16795.

S4MarkS4

Thankyou, I will look into that.

Aarononymous

I'm betting the combi vacuum hose