cosss94

Hello! This message just appeared on my Porsche Cayenne, it is somebody who encontered the Same problem ? I think it is a Little bit of lack of Power too, and in the morning at cold start, 0 degrees, the car shakes and it s working a Little interrupted, But this happened before that fault appeared. Thank you!

kayjh

What model is this?

cosss94

2019 Cayenne 340 hp

Schnave

Could be any number of things. Here’s some other threads discussing the Engine Control Fault:

https://rennlist.com/forums/cayenne-...-workshop.html

https://rennlist.com/forums/cayenne-...rol-fault.html

https://rennlist.com/forums/cayenne-...old-start.html

sevasnex

I had this on my new 2024 Cayenne a couple of weeks ago. Didn't notice a loss of power. The warning disappeared after engine restart. Dealer checked it and said "no error codes in flash memory". Whatever that means.
As noted above, it may be due to a myriad of issues. I guess, in my case it was a loss of pressure (I did opened and closed the gas tank cover after the warning and before engine restart).

Schnave

If any of these sensors or actuators fail to communicate with the ECU or if the actuators fail, you’ll get the dreaded Engine Control Fault message.

Oh, for the simple days of a carbureted Chevy V8!

cosss94

This is the error code .

Schnave

Turbo Underboost. The charge pressure sensor is telling the ECU the boost pressure is less than desired. Could be as simple as a leak in the air piping. Might be a bad diverter valve, Or it could be a failing turbocharger or waste gate.

Many threads on the p0299 code at Audi World forums:
https://www.audiworld.com/forums/sea...rchid=14938305

More here:
https://www.macanforum.com/threads/p...9-code.175900/
https://www.alexsautohaus.com/p0299-...ost-code-mean/

YHC

P0299 is the one that I had to replace the water pump.