Curtis fault code 36

[Silvernickel]

I have a 2020 Express S4 72v. It only has a few hours on it but it just started shutting off after about 10 minutes and showing a fault code 36. Once I turn it off and back on it will go again for another 10 minutes. The Curtis manual shows this:

Controller: 1234SE, Fault: 36

Fault Name: Encoder .
Action: Shutdown EMBrake; Motor disabled.

Fault Cause:
1. Motor encoder failure.
2. Bad crimps or Faulty wiring.
3. See Monitor menu -> Motor: Motor RPM.


Controller: 1234SE, Fault: 36

Fault Name: Sin/Cos Sensor .
Action: Shutdown EMBrake; Motor disabled.

Fault Cause:
1. Sin/Cos sensor failure.
2. Bad crimps or Faulty wiring.
3. See Monitor menu -> Motor: Motor RPM.

Has anyone else had this happen? What should I check and how?