Check Engine Codes! Need help!
 

I have a 1999 Audi A6 Quattro and I'm having continuous problems.
I had a "Check Engine" Bank 2 Sensor 1 code- so I changed the O2 sensor, after replacing the sensor my gas mileage actually made sense. That code has since gone.
Now it's reading these codes:
C2B10
C034
P1100
I cant find any info on the "C" codes, nor specifically "p1100".
I'm in a bind bc I have a big fat red "R" inspection sticker and can't afford to drop it off at the garage (just spent over $1100 on repairs done to the undercarriage damage that resulted in an oil leak from an accident).
Any advice is greatly appreciated!!!!

DTC P1100 :

Possible causes:

-- MAF sensor connector with poor continuity.

-- MAF harness with poor continuity.

-- MAF harness intermittent short.

-- MAF sensor internal intermittent open or short.

As for the others, check the wiring also o2 sensor. The connections more likely.

good luck with that.

Thank you for the info!
I checked the o2 connection, seems solid.
Next, I will disassemble the MAF housing and soak in rubbing alcohol. Hopefully that will keep the Engine light off (after I clean the housing, I will reset the computer).
I will post with results. Thanks!

Check Engine Codes Cont.
 

ok, so I cleaned the MAF sensor and reset the computer. MAF code is gone but...
The codes that came up are now:
P1338
P0422

P0442 - Main Catalyst Bank 1 Sensor Below Threshold

P1338 - Camshaft Pos. Sensor,Bank 1 Oben Circ./Short to B+

P0411 and P0422
 

Ok, so I replaced the o2 sensor. Then I cleared the MAF code by soaking the MAF in rubbing alcohol. Now....

The system pulls
Stored: P0411 Secondary Air Injection System
Pending: P0422 bank1 o2
P1338 no def found

I am not a mechanic, but I am smart enough to do basic repairs by myself (given some guidance and instructions/pics). I just don;t have the money to bring this car back to the Mechanic (I have spent over $1,000 in the past 2 months)
Where would I even begin with these codes? Where would you start?
Any help is GREATLY appreciated!!!:)

Check all your vacuum lines

Low oil pressure!
 

Hi-
The other day I was stuck in the snow and revved the engine in order to get traction- which worked. I was careful not to rev too high- as I have heard stories of engines blowing.
Now- the "low oil pressure" light has been intermittently coming on and off. The oil level is normal. The car runs normal, but I noticed today that, for about a minute, ran horribly- and bucked.
Where should I start diagnosing the issue? Note that the light doesn't stay on. Also note that I currently have the following check engine codes: P0411 and P0422.
I am guessing that it is the revving at high RPMs that triggered this issue, as the light never came on before. Is it possible that a sensor got tore off from the snow? Or the turbo is blown? Or could a damged oil filter result in this issue?
any help is GREATLY appreciated!
thank you!!!