Engine code P0368 Camshaft position sensor B Circuit High Bank 1

A5/S5/RS5
#1

Over the past few months I have had maybe 5-10 occurrences of a “Do not exceed 6000 rpm” warning with EPC light. It all disappears within 5 seconds. These happen at low speed and even at idle. This seems to NEVER have happened at any engine speed over 3000rpm. Code reader gives me P0368 Camshaft position sensor B Circuit High Bank 1 message. I didn’t have any Check Engine light until two weeks ago, and that went away after 2 days.

What do I think about this, and what about my car itself? My car is used regularly but not like a track car at 7500 rpm every day! I have just about 62,000 miles now, or just over 100k km. I have NOT had a carbon cleaning yet. Oil changes about 5000 miles, once a year (that’s as much as it gets used). All other maintenance done when scheduled, like spark plugs and all other fluids.

I am due for an oil change at this time, and I have considered to ask for a carbon cleaning to be performed at the same time. Something else suggested was to clean the throttle bodies, so that would be another easy task. Perhaps two camshaft sensors should be swapped to test them, but I think one is much more difficult to access.

In any case, if anyone has had this experience as well as a solution, I would like to hear about it.

#2

I put my Rosstech VCDS on the car and got additional VAG codes 4511 and 5533. I have an appointment with my local Euro specialist on Monday so I will let them do a bit of investigation. Initial thoughts and hopes are for an electrical problem, so perhaps inspecting the wiring or swapping a pair of sensors will be the first efforts.

#3

I have the same issue. Carbon clean done vvt solenoids replaced and all 4 cam sensors replace. Oem. My car doesn’t get driven much. Once the car is up to temp they go away. If I drive the car say, 3 days or 2 consecutively, it doesn’t come back.
Read a post somewhere a while back that the wires to the cam sensors are somewhat resistive type and can degrade over the years, hence the fault. You could replace the wiring loom, but it’s costly. I’ve just learned to live with it and it’s been 4 years with zero issues.
In saying that, yours could be something different. Just thought I’d share my bit.

#4

Many parts of the wiring loom are available separately. https://www.ilcats.ru/?brand=audi&function=getParts&market=USA&model=RS5&modelcode=695&year=2014&group=9&subgroup=971&part=971081&language=en
First thing would be to pull out the engine wiring diagram and unplug from the ECU and start checking each connection for continuity. Obviously starting with all of the timing sensors since it sound like you have replaced all of those.