Code C0050
Thread Starter
Heel & Toe
Joined: Nov 2021
Posts: 21
Likes: 2
Code C0050
I have a 2016 C7z with an A8 trans. The car has H/C with a 2650 and meth. Stock converter and trans, with an RPM diff and DSS axles.
Roll racing is typically all I do. Everytime I roll out of 3rd at full throttle, shifting into 4th my ABS/TC lights come on. This is followed by a display message to service the stabilitrak and service rear axle. When I run the codes, it's the same 3 each time. C0050, U0415 and U042B. This issue has been happening for about a year now. Since then, I have replaced the battery, upgraded the rear diff to an RPM stage IV, since I was there I went ahead changed out the axles as well. Went out for some testing, same issue with same codes. The C0050 code pointed me in the direction of a Rear right speed sensor, so I had this replaced. Went out for testing, same thing.
The car runs perfectly fine, no weird noises or drivability issues. Not really sure where to go from here.
Has anyone experienced this? Any suggestions?
Thanks in advance
Roll racing is typically all I do. Everytime I roll out of 3rd at full throttle, shifting into 4th my ABS/TC lights come on. This is followed by a display message to service the stabilitrak and service rear axle. When I run the codes, it's the same 3 each time. C0050, U0415 and U042B. This issue has been happening for about a year now. Since then, I have replaced the battery, upgraded the rear diff to an RPM stage IV, since I was there I went ahead changed out the axles as well. Went out for some testing, same issue with same codes. The C0050 code pointed me in the direction of a Rear right speed sensor, so I had this replaced. Went out for testing, same thing.
The car runs perfectly fine, no weird noises or drivability issues. Not really sure where to go from here.
Has anyone experienced this? Any suggestions?
Thanks in advance
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Failure of the wheel speed sensor signal can cause a rear axle code since PTM can't operate properly without the ABS system (which provides ABS, TC and Stability Control) to support it. PTM uses a combination of Magnetic Ride Control, Stability Control, Engine Control and Rear Axle (eLSD) control to provide yaw control.
If you resolve your C0050 code you will have ABS, TC and Stabiltrak as well as being able to use your eLSD unless your RPM diff uses a mechanical LSD Vs electronic.
Bill
