Audi TT The Audi TT line, in both the coupe and roadster combines Audi's All Wheel Drive performance with the feel of a European sports car.

engine code

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  #1  
Old 02-21-2006 | 03:37 AM
intake's Avatar
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Joined: Jan 2006
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Default engine code

Does anybody know what check engine code 0411 is?
 
  #2  
Old 02-21-2006 | 10:09 AM
techbod's Avatar
Joined: Nov 2005
Posts: 12,826
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Default RE: engine code

secondary air injection (AIR) system - incorrect flow detected fault to look for are AIR pump, AIR valve, AIR hoses for splits/leaks

Various - Audi, Mercedes Benz, BMW, Volvo - Mid 1980's Bosch CIS-E systems

This feedback controlled continuous injection system has a "black box" mixture control unit mounted directly on top of the fuel distributor.

NOTE: Do not puncture wires on these applications! Back probe connectors so as not to damage shielded wires -- puncturing the O 2 sensor wire on these cars will ground the sensor signal. The computer signal to the mixture control unit is a varying current (milliamps) -- not voltage. High current is a lean command and low current is a rich command. Throttle switches are unique in this application as well -- a three way switch -- idle/off/WOT (wide open throttle).

Fuel system pressures, filters and contamination should be checked according to the manufacturer's specs. (Replacing a fuel distributor is expensive.) Some applications have a fuel pre-pump located in-tank. If the customer complains of poor hot driveability, suspect a pre-pump problem.

Vacuum leaks are not uncommon in this application, with injector (O.D.) seals a prime area. These European import systems do not fail often, but when they do, some of their peculiarities make them difficult for the uninitiated.

 
  #3  
Old 02-21-2006 | 09:05 PM
AudiTech04's Avatar
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From:
Default RE: engine code

Ok WTF was that^^ all about "Fuel Distributer" cars havent had those since like the early 80s

The only thing that applies is the actual code description

There are a few things it could be but if someone has a Vag-Com near you they can do a output diagnostic check to see if the pump is working
 
  #4  
Old 02-21-2006 | 09:10 PM
techbod's Avatar
Joined: Nov 2005
Posts: 12,826
From:
Default RE: engine code

don't you get testy with me you swine it was just an explanation how it works now it would be nice if you posted some pictures to explain it better don't you think or do I have to do every thing lol
 
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