Been chasing down 4 ABS/ASC codes for awhile now. The codes are as follows:
U0125 - Sensor cluster CAN timeout
U0251 - AWC CAN(local) timeout
C1290 - Fail safe mode(Lost of CAN data)
U1003 - Sensor cluster Bus-off

I have found one other thread with someone experiencing the same codes. His issue was the G/Yaw Sensor. We have replaced that, nothing changed. Other things we have replaced are:
ABS Pump and recoded
ETACS and recoded
Yaw/G Sensor
ABS Sensors
Calibrated all sensors
Checked/Cleaned all chassis grounds

I'm at a loss on what to replace next. Engine ECU? Chassis wire harness? If you have any ideas, please let me know. Would be greatly appreciated! Thanks

 

Have you tried flashing the stock tune back on it? Maybe something in the ecu memory has gone corrupt? Also, im guessing you checked all the wheel sensor voltages for consistency, and nothing is off in terms of steering wheel position sensor, and the rack. The evo x, as you well know, is super sensitive to all that stuff everything has to be in harmony, otherwise itll start doing weird things and triggering odd codes that are often, not related to the problem. I had a wheel sensor go bad, but it never threw a code, it just caused abs, asc, ayc, sawc, among others, to detect malfunctions. It even caused the speedo to freeze at random times. Are you getting any driveability issues in addition to these codes?

 

These are bus communication codes. Stop replacing parts and diagnose. You need to measure the network effective terminating resistance and isolate if you have either a broken wire, or a module that is shorted and pulling down the system.
There are videos of scan bus communication troubleshooting. Scanner-danner makes some of the best.

 

I’m having the same issue with my 2015 Evo. Did you ever figure it out? Thanks in advance