U0140 ABS Lost Communication

[Lbutera036]

A U0140 code that indicates a breakdown in communication between the ABS module and the BCM is the annoying problem I'm having with my car. I've already attempted a number of troubleshooting techniques, such as:

BCM connector inspection and cleaning
Looking over the BCM board
Fuse box replacement
Changing the ABS pump module
Keeping ground connections clean
Trying to use diagnostic tools to clear the code

I'm still seeing the "service electronic stability control" message and the traction control light is still on in spite of everything.

I'm beginning to believe that there may be a CAN bus problem. Does anyone know anything about this particular code or issues like it? I would be very grateful for any advice on how to identify or resolve the CAN communication problem.

Additionally, I'm searching for a Witech diagram or any information regarding the ABS and BCM's CAN bus communication.

 

[FastandFurious]

It could very well be a CAN bus problem. You might want to check the wiring connections or look into possible grounding issues between the ABS and BCM.

 

[Lbutera036]

It could very well be a CAN bus problem. You might want to check the wiring connections or look into possible grounding issues between the ABS and BCM.

Thank you! I will definitely check the wirings, worst comes to worst I will contact my dealer regarding this issue.