TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

Does anyone know what a "secondary injection "code might mean ?

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Old Jan 31, 2004 | 06:20 AM
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Does anyone know what a "secondary injection "code might mean ?
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Old Jan 31, 2004 | 07:35 AM
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Default uhh, means something is up with your secondary air injection system; is it disconnected?

It's the plastic flex hose that snaps into the lower rear part of your stock airbox - did you remove it?

It warms the car up more quickly to reduce emissions/improve economy by returning warm air from the motor into the air intake, when the car is cold.
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Old Jan 31, 2004 | 07:43 AM
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Default Yep, I have a BMC cda in. It's been there for about 10000 miles and never a code until last week.

Any ideas ??
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Old Jan 31, 2004 | 07:44 AM
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Default it's more complicated than that...What is the exact code?

Secondary air system
Secondary Air Injection (AIR) solenoid valve -N112-, checking
Secondary Air Injection (AIR) pump relay -J299- and activation, checking
Secondary Air Injection (AIR) pump motor -V101-, removing and installing
Combination valve for Secondary Air Injection (AIR), checking function and proper seal
Left combination valve for secondary air injection, removing and installing
Right combination valve for secondary air injection, removing and installing
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Old Jan 31, 2004 | 08:07 AM
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Default Re: it's more complicated than that...What is the exact code?

They wouldn't say or didn't go any further because it is an emission problem and my car FAILED the visiual inspection for the emission sticker. So, in order to ferrett this out I have to reinstall the stock airbox. I'm just trying to get a feel for this problem.. Thanks
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Old Jan 31, 2004 | 08:27 AM
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"failed visual" - then it is the extra air tube that is hanging loose.
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Old Jan 31, 2004 | 08:34 AM
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Exactly what they said. However, there is still a code that needs reconciled..
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Old Jan 31, 2004 | 08:45 AM
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Not necessarily. Did they tell you this? Was it VAG'D? mine is off and it doesn't throw codes
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Old Jan 31, 2004 | 09:01 AM
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Default Secondary Air Injection System?

I made a post last night about a code I got from that too. There's some info on it in that thread.
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Old Jan 31, 2004 | 09:30 AM
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Default What they said was that the 2nd injection hose is loose and they claim to have read the code. ...

Don't know if they VAG'd it. The service guy said that they cleared the code but it will come back on until the problem is solved. The whole situation was very convoluted. They also said that my car should not pass any visiual by any authorised inspection station in the state. I just don't want to hurt the car by driving it with the check light still on..
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