P0341 does not go away.

[Fleitipon]

So my car gave me a p0341 code. Camshaft position sensor. Replaced the sensor and same issue. I looked into the forum and I’ve seen similar issues or exactly the same issue but no one left a solution or something. My car is a 2011 Audi A4 2.0t. When the car is cold runs fine no issues. But when it starts to warm up I feel like the engine stalls at certain rpm. Around 800-900 rpm. Feels like a misfire or something. I replace the camshafts adjuster magnetic solenoid. Same problem. I’m about to replace the camshaft valve or n205. To see if something changes. What else it could be? Maybe the timing chain? Or the tensioner ? Like I said before. No one posted a solution or at least a partial solution to this.

update. I disconnected the cam magnetic adjuster and the car did not showed the issue described above. It just gave me another check engine light code, obviously, since I disconnected that part. The car seems to runs fine without it. And I thought that was the problem, I replaced that part with the n205 variable timing solenoid as well. But for my surprise the problem did not go away. And as soon I connected the adjuster solenoid the car started making a louder noise. not that bad but I can notice the difference.

update number 2. I decided to replace the timing chain and the tensioner. I check the chain and it was a little stretched. not that crazy. and also the old tensioner looked kinda loose. I thought bingo! this will solve the problem. Took me 10 hours to finish the job. After several trips to home depot, autozone, etc. to get tools and stuff. Before installing the front I start the car to check. start normal as usual, I was so excited. Then put everything back together, I test drive the car and same damn problem. This is beyond frustration. But at least I have a piece of mind since I replace those parts. Tomorrow I'm going to the dealership to get a genuine camshaft sensor. I'll give it another and maybe the last shot. If this thing does not go away I will just disconnect the cam magnetic adjuster and drive it like that. At this point I don't care anymore. I did my best to try to fix it. Even the last owner took it to the dealership and they recommend to get the chain, guides and tensioner replaced. Because of the P0341 code. Luckily I just spend 500$ in parts and I did not leave my car at the dealership to get that job done for 1400$ plus taxes. That's just for labor. It would have been just a waste of money. Nothing left to add. Hopefully someone will have an answer or solution for this.

[Quattro420]

If you have fault p0341. camshaft position sensor range/performance, consider the possibility of a low oil level. If the oil level is very low, not enough oil is present to feed the N205 allowing proper adjusting.

[Fleitipon]

If you have fault p0341. camshaft position sensor range/performance, consider the possibility of a low oil level. If the oil level is very low, not enough oil is present to feed the N205 allowing proper adjusting.

I was thinking so hard about that yesterday. Since this car has measure the oil level electronically I don’t trust that enough. I’ll try to get the dip stick for it since the car only has like a cap where the oil dip stick should be. And also I’ll get an oil change. I know this car takes 4.9 quarters I think. Thanks for the reply

[Quattro420]

I’ve had the harness rub by the oil filter housing but you get other dtc

[Fleitipon]

update number 3. I replaced the camshaft bridge and seems like the problem went away. it sounds a little different in idle now. Smoother. That's how I can tell. And does not stall anymore(apparently). I'm going to replace the oil tomorrow since I'm getting the dip stick to measure the oil, just to be 100% about the oil level. Yesterday it was showing full oil and today like 3/4 full. I did not add any oil yet but I think it is fine, It is between the allowance.

About the camshaft bridge, since this is the part that feed the oil to control the camshaft I decided to replaced it. Mine looked fine,but I had a feeling that something was wrong inside of it and apparently it is.

I did not have to get the car in service position since there is enough space to take it out with a 1/4 ratchet. and the 12 point socket for the exhaust bolt. 45 min to finish the job.

[mtroxel]

he camshaft bridge, since this is the part that feed the oil to control the camshaft I decided to replaced it. Mine looked fine,but I had a feeling that something was wrong inside of it and apparently it is.

I assume the screen was gone. Seems like it disappears on most of them. And if so, was the ball behind the screen still there?

[Fleitipon]

Hey man. The screen was still there when I replaced the timing chain. And the check ball too. I decided to install it without the screen because it was a little loose, since I knew I would have the cam bridge replaced. Seems like something went wrong inside the cam bridge, although it passed visual inspection.

[Fleitipon]

Hopefully people out there will find this helpful. I did a lot of research and no one actually wrote back about this problem. Replacing the cam bridge it was the solution for my problem. I drove over 600 miles already and the car runs perfect. No check engine light. No stalls. Nothing.

[Theiceman]

that is soo weird , isn't the cam bridge just a pathway ??? great it is fixed but I don't get it !!!

[Fleitipon]

Well. I know that for fact when the car is in idle the intake valves are in a “more efficient” position. In order to do that the valves needs to be shifted by the solenoid which uses oil to shift them. When you start moving the car (in my case) at lower speeds the solenoid shifts to the original position( when you unhook it stays in that position always) and since your moving it at low rpms there is not enough oil pressure to move it fast enough, since something was wrong with mine, maybe it was clogged or something, and that’s when the computer gets confused because the valves should be in certain position when it is not yet there due to the lack of oil pressure. And that’s when I use to get the check engine light on and the misfire or stall. It wasn’t a sensor problem. It was mechanical. And the cam bridge is necessary to feed the solenoid with oil in order to proper function. So I think it does makes sense.

[old guy]

Audi AVS operates on the exhaust valve cams. Intake cams are fixed.

[Theiceman]

Well. I know that for fact when the car is in idle the intake valves are in a “more efficient” position. In order to do that the valves needs to be shifted by the solenoid which uses oil to shift them. When you start moving the car (in my case) at lower speeds the solenoid shifts to the original position( when you unhook it stays in that position always) and since your moving it at low rpms there is not enough oil pressure to move it fast enough, since something was wrong with mine, maybe it was clogged or something, and that’s when the computer gets confused because the valves should be in certain position when it is not yet there due to the lack of oil pressure. And that’s when I use to get the check engine light on and the misfire or stall. It wasn’t a sensor problem. It was mechanical. And the cam bridge is necessary to feed the solenoid with oil in order to proper function. So I think it does makes sense.

oh I totally get how it works in principle and you have proven it is fixed, but what I'm asking is does the bridge do anything else other than just perform as a pathway for oil ?

[Spawne32]

Audi AVS operates on the exhaust valve cams. Intake cams are fixed.

Intake cam's do have VVT though, variable lift is on the exhaust side.

[old guy]

Intake cam's do have VVT though, variable lift is on the exhaust side.

Oops! You are correct. Here is a great explanation:

[mtroxel]

I'm asking is does the bridge do anything else other than just perform as a pathway for oil ?

I'm with you, 600 miles = fixed. All I can figure is if the check ball didn't open either direction? Then no oil pressure, or way too little, makes its way up.

[Spawne32]

Oops! You are correct. Here is a great explanation:

lol yeh i actually had to use that video to reassemble my VVT gear when i accidentally took the cover off and everything flew out.

[Fleitipon]

Yeah. Exhaust valve it is variable but the intake moves as well. It can advance or delay the open/close.

[Fleitipon]

oh I totally get how it works in principle and you have proven it is fixed, but what I'm asking is does the bridge do anything else other than just perform as a pathway for oil ?

Looks like it is just a pathway for oil. Kinda complex. And when it fails, in my case, the car kinda sucks. Low response, stalls in the middle of the highway. And sometimes the engine just stops.

[Theiceman]

Looks likes it is just a pathway for oil. Kinda comple. And when it fails, in my case, the car kinda sucks. Low response, stalls in the middle of the highway. And sometimes the engine just stops.

Well glad you are motoring along and have some awesome garage art to hang :)

[Fleitipon]

Well glad you are motoring along and have some awesome garage art to hang :)

Well, I did not give to fix it. I knew something was wrong with the intake components. The last piece in my head it was the intake cam. But luckily I did not have to. And the funny part was like the guys at the dealership did not know what was wrong with it. And honestly I don't trust dealerships or independent shops. No offense. I may not have their experience but if I know whats wrong I can fix it.

[latty]

have you tried this? https://www.youtube.com/watch?v=DXvHdmq0reA&t=1171s

[kevinc]

I just thought I would share for others since this post helped me with the same issue. I too like the original post have 2010 2.0t A4 with p0341 with intermittent stumble and stalling under light throttle and loud engine noise. Chain and tensioner were previously replaced with oil consumption repair. Cam sensor, 3/4 valve and the actuator all replaced like the op. Replacing the cam bridge has fixed the problem.

[Theiceman]

WTF ???? is this official VVT month or something ????

[Wolfman4584]

WTF ???? is this official VVT month or something ????

It seems like it! Wish mine was the cam bridge though

[kevinc]

Yeah the ball valve behind the screen which normally breaks apart was broken so there must have been low oil pressure. Not sure if this picture will work
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Edit - thanks old guy got the photo working

[old guy]