mj_remote

About 4 months ago just before warantee expired on my 2001 A5 Cab 2.0 TFSI they changed the rings on my engine because I had one of the cars that was consuming excess oil, 1 quart every 3500 miles or so.
Now I had the engine light come on so I pulled out the vagcom and got the following. I'm thinking they failed to tighten something or got something in the PCV valve or something else. The car still has the issue where acceleration sometimes stalls out around 2600 rpm it has had since the first couple months.

Should this be under warantee, I think so obviously as car has only 42K miles and is always garaged so its a bit much to think something has disintegrated.

I have a service scheduled to have them tell me what they would do but if its like replacing a PCV valve that is simple enough to do myself.

Any ideas about what else it could be or if it really is likely its unrelated. Does this normally happen at 5yrs/42K miles?

Vag-com Relevant section below, rest is no fault found

Also do I read this right that the issue is a one off? and it has not happened since.

If so can I just clear it and wait to see if it happens again?

Chassis Type: FH (8T0)
Scan: 01 02 03 05 06 08 09 10 13 15 16 17 19 26 36 3C 42 46 47 52
53 55 56 5F 62 6C 72

Mileage: 68690km-42681miles

01-Engine -- Status: Malfunction 0010

>>> shortened this to 02...72-All Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (0-----CAEB) Labels: 06H-907-115-CAB.clb
Part No SW: 8K2 907 115 AG HW: 8K2 907 115 D
Component: 2.0l R4/4V TF H18 0002
Revision: E1H18---
Coding: 011C010A290F0260
Shop #: WSC 07109 444 105095
ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
ROD: EV_ECM20TFS0118K2907115AG.rod
VCID: 74EDD7EADFB3E99E65-8020

4 Faults Found:
5646 - Leak in Air Intake System
P2279 00 [237] - -
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 68509 km
Date: 2016.01.14
Time: 18:12:04

4007 - Idle Control System RPM
P0507 00 [104] - Higher than Expected.
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 4
Mileage: 68527 km
Date: 2016.01.14
Time: 19:15:05

4105 - Bank 1; System too Lean at Idle
P2187 00 [237] - -
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 68508 km
Date: 2016.01.14
Time: 18:09:42

4201 - Fuel Level too Low
P1250 00 [097] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:

Readiness: 0000 0000

mj_remote

Also it says fuel level too low, could it be that I ran out of gas momentarily and it caused it to run lean once, and that is all this was?

SloopJohnB@mac.com

But normally it won't run out of gas momentarily unless something else is wrong other than the loose nut behind the wheel.

Sounds like an induction leak, perhaps a torn boot or loosened intake hose. Check them all, because it does happen.

mj_remote

update so i have been running since the 14th with no other issues so I cleared the fault today, just to see if I could continue with no issue, and now its terrible, idleing way too low and misfires. all i did was clear the fault codes so I am guessing the engine control module was compensating and now it doesnt?

Octavian Balan

I have same issue, can you tell how did you fix it?
thank you

mj_remote

So the Air Intake issue was the PCV valve had a pin hole leak, happens a lot apparently, you can usually hear this if you get close to the PCV valve (I did not know at the time). its right behind the engine up top easy to get to. I was able to just feel for the air coming out but if you have trouble a little water with soap would also show you the leak like you would for a bike tire. A piece of clear tape over the hole will fix the issue temporarily and you should see the problem go away diagnostically but you still need to change out the part. There are videos online that show you how to change it out. I had the dealer do it as it was pretty cheap once I told them what I wanted and avoided the diagnostic charge as I just walked up to the car and showed them the leak. I had it back in less than an hour. It was under warranty so I did not have to pay for the part and I was only charged a 1/2 hour labor. Hope that helps.

SloopJohnB@mac.com

Pits an emission part and should be fully covered.