Has anyone had this happen to them? I was driving along and my ACD light came on and lost my Tarmac Gravel Snow mode and the outside temp gauge went blank, read the code with my cobb came up as this code U0431 which is an ETACS error and I took it to the dealer ship and they reflashed my Ecu and it came back on, so now there thinking it's something with the wiring between the ETACS module and ACD module. I'm tryin to avoid that cause it will be a hefty labour bill. And they said no codes or any sign of a bad ACD pump so what could it be?. Any help would be awesome! Thanks.

Pics below

 

I got that code about a month ago. Thought it might have been my acd pump (since my fluid in trunk was full). I deleted the code and it didn't come back.

...now my car is up on jack stands due to blown center diff Hope you're not going down the same road.

Is your car making any noise at all? I noticed a popping/clicking coming from the rear. And once the **** really hit the fan it was a very LOUD popping coming from the front. Here's what my car sounds like now...

 

You can get that code from a blown fuse. I would definitely check this possibility before anything else.

 

Do have an idea on what fuse that would be? i found out the problem to my outside temp not working, my sensor is missing.

 

thanks for the input man i dont have a clicking or popping sound when i drive, its something with the Canbus or Etacs i believe

 

Apologies, but I'm not sure which fuse (or fuses) can cause this.

 

Michael Roestel, I have the same issue on my car. I drive a 2011 evo x gsr this happened to me after a clutch swap. I have a rattling noise in first and reverse gear only when i start of but my guess its cuz of the heavy duty act clutch. If you did fix this issue can you post how you did it because i still cant find out the how to fix it. Thanks.