CEL P0011 and also a strange engine noise. PLEASE HELP (Along with N205 location pic)

[Markie93]

Hey guys,

I'm pretty new to this forum and "foruming" in general, so please point me in the right direction if I posted in the wrong place as I know some people are quite picky on that.

I have an 06' Audi A4 (B7) 2.0T with about 150k miles. First Audi i have ever owned, bought with 132k miles to see if I'd like it. No mods of any kind due to higher mileage.

I did some maintenance during Christmas break of 2013 (about 3 months ago) myself, which included the timing belt, water pump, thermostat and a few other pieces of hardware. I just recently (last couple of weeks received P0455 Code for an Evap emission control system leak. I replaced the purge valve and the problem hasn't reappeared. I also got the P0011: "A" Camshaft Position -Timing over - Advance or System Performance (Bank 1)

I did some research and didn't find a whole lot. Some people had issues with their Camshaft Adjustment valve aka N205 valve i believe, replaced it and it was fixed, but found about 10-12 ohms of resistance on the sensor and about 13.5 V coming to the sensor when the car was on. This makes me think the sensor is good seeing as this website shows how to diagnose the sensor:

http://www.audiforums.com/forum/audi-a4-8/p0011-code-among-other-things-191121/

Here are a few pictures for your reference leading up to the testing of the N205 valve. I know this is starting to turn into a DYI but just trying to show the steps on how I tested the sensor in case i did something wrong.


Here is a big picture from under the hood (Standard, unmodded B7 2.0T):




Here is a closer up of the N205 Camshaft adjuster valve is:





Finally a close up of the actual N205 Valve:





To remove, there are two T-20 Torx bits:





Here is the N205 Camshaft adjuster valve:






Testing the resistance in the sensor(11.9 ohms):





So those were the steps I took to check the sensor. Does this mean it is for sure good or bad? The sensor is like $130 so i am trying to do all the trouble shooting I can before ordering the part.

On a side note after I had pulled that sensor out and re installed it, I got a strange noise. (I plan to make a separate thread for this but wanted to mention incase it was related somehow)

After re-installing the N205 sensor, I got this noise anywhere from idle on up. Any idea's as to what could be causing it? Oil cooler maybe? Has anyone else had a similar issue?



I also tried diagnose the sensor a different way, I unplugged it completely to see if it would throw the exact same code. Turns out, when I unplugged the N205 Camshaft adjuster valve (electrically) I got this code, not the P0011, but have seen these two code together in some other posts. Are they related?:



Anyway, I know this is alot of random information but I am really trying to get this figured out so I don't have to take it to the dealership.
Thanks again,
Jake