yankeez

I bought a KKL USB for my Audi A4 1.8T Quattro. Because when I swapped out my radio to put in my new clarion I was driving home with the radio not connected my check engine light came on. Oh, my Air Bag light came on also.
I downloaded the VagCom software and I ran a scan. Here's what it spit out. Besides I had problems with the Air Bag part. I hit Yes because my model wasn't set but it said no problems. I can't reset the light because I have a trial version. Don't have a 100 bucks yet for the pro version.
Address 01 Engine
Controller: 4B0906018Q
Component: 1.8L R4/5VT G 0008
Coding: 07251
Shop #: WSC 03122
1 Fault
16839 - EVAP System Large Leak Detected
P0455-35-00
Readiness 0000 0000

That's the only error codes I recieved. I wanted to reset them but i don't have the professional version. Anybody if I buy the software do I get to reset the codes? I have a warrant through Audi "certified".
this might help and am wondering if this is a domino affect. December 2 I had a Air Pump failure because the valve got stuck and the ECU told the air pump to over compensate and it blew the air pump. They fixed it. I brought it home and two days later the check engine light came on again, then the light started flashing and the car started jerking back and forth. Audi sent a flat bed. Well, this is what the dealership wrote on the invoice in Mechanic (language).
Cause: Internal Malfunction in valve cause air pump to fail.
63433 Check engine for Dtc's for P0411, P0300, P0301, P0302 SECONDARY AIR, INCORRECT FLOW DETECTTED P0411 AIR PUMP COMBINATION VALVE, STUCK CAUSING CONDENSATION IN AIR PUMP LINES & AIR PUMP, AIR PUMP BINDING DUR TO MOISTURE CONTAMINATION THEN CHECKED SEC. AIR PUMP AND COMPONANTS REPLACE AIR PUMP COMBINANTION VALVE.
THEN MORE PROBLEMS!!!!!!!!!!!!!!!!!!!!!!!
63433 2 ENGINE DTC'S P0301 P0302 SPORATIC ENGINE MISSES NUMBER 1&2 CYLENDERS RUN GUIDED FAULT FINDING FOR 2 DTC'S CHANGE COIL POSITIONS, NO CHANGE IN SPORATIC MISSES, CLEAN PLUGS, CHANGE #1&2 INJECTORS WITH 3&4 INJECTORS, NO CHANGE IN MISS CHECK FUEL PRESSURE, 53 PSI CHECK 1&2 COILS WITH 5051 SCOPE PORTION FOR PRO PER TRIGGER, GROUNDS & POWER SUPPLY, CHECK WIRING CONTINUITY WITH 1598/31 PIN OUT BOX AND 5051 FROM ECM WIRING TO COIL ENDS ORDER ECM OVER NIGHT AND REPLACED.
Haven't had problems since now. I have a feeling it has something to do with this, but what the hell do I know.
I want to purchase the code for the VAG-COM and reset the fault code but I thought I would ask you experts 1st.
ANy ANY suggestions or comments would be appreciated.

yankeez

I see alot of people have experience with this and see this comes up alot.
What is the most commen problems with this code and what did you do to fix it?
I'd really appreciate it.

rook13la

I have the same problem, no answers to help so far. Did you get this fixed? Did you have any responses that helped?

I already changed the fuel cap, looked for other posts with responses.