ABing search of Audi/B6/B5 should show lots of pictures to help you determine what model you have - my understanding is 2002-2005.5 were B6 A4's, 1996-2001 were B5's. I tried this VIN decoder but it is saying that I have an automatic transmission when in fact I have a 5 spd manual.
Solets start with this and you guys can either take over or add to this list. Audi 2002-2005 3.0. Motor. Best I can tell the 3.0 has one major motor code. From 2002+ the 3.0 motor code XXX was the same for both the same for the A4 and A6. What small cosmetic or parts chances to the motors are unknown at this time.P0300is a generic OBDII code that can occur with the Audi A4. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, the Todiagnose the P1292 Audi code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.A4(B6 Platform) Discussion - Possible Solution for Catalytic Converter fault codes - P0421 & P0431 - I was told something interesting that may save some of you a lot of money. I have a 2002 A4 3.0Q that I took into my local dealer (Cutrubus Audi/VW) for a CEL. I already knew what the fault was because I had it readViewand Download Audi 1.8T technician reference manual online. 1.8T automobile pdf manual download. 5 cyl. f.i. engine (4-valve, turbo) mechanics (93 pages) Automobile Audi 100 1991 Repair Manual. Automobile AUDI A4 2001 Owner's Manual. Technical features design and function (88 pages)6qZJ.