CEL Code

B6/7 S4/RS4
#1

Hi AR, my RS4 gave me a code P2293 (N276). I’ve done some reading and could not find anything relevant to the RS4 with this code. Usually the 2.0T cam follower/HPFP. I’ve replaced the FPR sensor and cleared the code. The light came back after stepping into it for a bit in 2nd gear up a hill, help?

#2

That is a common code for the 2.0T.

I would check the N276 senor on the bank 2 HPFP as it could be failing. Check and see if the sensor plug is coming loose or is corroded/

http://i955.photobucket.com/albums/ae31/ciprianpatulea/N276.jpg

It could be broken like this:

http://i146.photobucket.com/albums/r248/gu4800/2Large.jpg

#3

Also how old is your fuel filter? You’ll get odd fuel problems and codes if it’s old. You’d be in good shape to change it either way. I found out the fuel pressure regulator is actually in the fuel filter. Changing mine fixed my mystery fuel code last year.

#4

Thanks for that Jake, I’ll take a peep when I have a chance.

Hyden, I replaced that fuel filter at 75k miles, car is at 110k miles now. What’s a recommended interval?

High mileage
#5

I do mine every 30k or so. Audi I believe suggests 55k (because this is outside of the audicare interval likely lol)

#6

Turns out my HPFP on bank 2 was the culprit. Thanks Jake, much appreciated. The RS is pulling strong again.

Question for the folks that keep their engine bay clean, is spraying the engine bay down with a degreaser/pressure washing the 4.2 okay?

#7

Personally, I would remove the CF trim pieces ahead and leaning those by hand. Add a little life to the inevitable yellowing. Also, those valves are soooo fragile, I wish their was some type of protective case to protect them…Anybody good at designing with a 3-D printer?

#8

Not okay. Too many electrical problems potentially. A member of AZ did this and spent the next 6 months fighting gremlins. He did it on the advice of someone who worked at an Audi dealership. That was pretty shocking really.

Regarding engine cleaning I would suggest the following

  1. do it the slow painful way…with a couple of rags and modest amounts of cleaner/degreaser

  2. don’t worry too much about it…you tend to drive with your hood closed if you’re like most people, so it’s not an issue to waste a lot of time and energy on