HI all, returning to my audi roots after 20 years with Porsche. I have a 2015 A3Q that I am abuilding into a track car with the intention of doing 20 or so track days a year. So far I've had it out for three weekends, and each has been characgterized as a good first 20 minutes of session, followed by power loss (assume motor pulling timing), and then and ECT/do not exceed 4000 RPM. If I stop an restart the car, the error codes are no longer displayed and the car runs essentially the same as described. Dealer replaced the oil pressure sender and spark plugs last week. However, this weekend the showed the same behavior. Additional Note - when going into limp mode engine runs very rough.

My shop pulled the codes this morning:

P030200 - Cyl. 2 misfired detected
U112300 - Databus error value received
P164B00 - Oil Pressure switch - malfunction (I suspect this is really saying oil pressure starved for a moment)
P130A00 - HIDE cylinder
p1030100 - Cylinder 1 misfire
P030000 - Random/multiple cylinder - misfire detected
UO41500 - Invalid data received from Anti-lock brake control moduole

We're at a minimum going to replace the coils which I am sure are original to the 2015 car.

Note - no issues whatsover driving 5000+ miles on the straight.

Thanks in advance,

Matt

 

Additional information:
- All track use was done with either 100 octane unleaded (for piece of mind) or a 50/50-ish blend of 93 and 100 octane unleaded.
- I put the codes in ChatGTP and is pointed out that these could be caused by either a bad MAF and/or PCV valve. Will replace these as preventative maintenance
- Car had fresh oil from the shop It uses about 3/4 of a quart per session. No blue smoke, and compression test was good.
- Car made 221/250 Hp &Tq on the dyno yesterday. Which I believe is above advertised stock HP. It does not burn any oil in 5000 miles on the street
- I could feel the ECU progressively through each leading up to the ECT and Limp.

Any Track Junkies out there?

 

Any update?

 

Thanks

 

Addressing the misfire issues is crucial. Coils replacement is a good start. Additionally, inspect for vacuum leaks, check fuel injectors, and ensure consistent fuel delivery.

 

ENGINE: i assume that you have the gas turbo engine. I like the APR Stage I with (from ECS Tuning) a MagnaFlow cat-back exhaust and a Pipercross air filter.
HANDLING; H&R rear bar from ECS. Look up the thread Ground Control Coilover Conversion under Suspension and the thread A3 Wheel/Tire Fitment under Wheels and Tires.
ROSS-TECH: Just plug the cable into the OBD II port under the dash and into your laptop. Start clicking and you will find a wealth of information.

 

Thanks for the info, I will keep it in my mind.