Cadillac U2108: Lost Communication With Electronic Brake Control Module

What Does The Cadillac U2108 Code Mean?

Key on or engine running; then after all module had initiated for the ignition cycle, one module (EBCM) stopped communicating and other modules set a code specific to the module not communicating. The controller area network (CAN) is a high-speed network.

What Are The Potential Causes Of The Cadillac U2108 Code?

Below are some potential causes of this DTC:

• Check for a loose connection at the EBCM
• Test the main power and ground circuits to the EBCM
• Check the CAN serial data circuit to the EBCM
• PCM may have failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

• GM, 2012, Service Bullettin – Multiple DTCs Set When Using Scan Tool Device.
• GM, Service Bullettin – PIT5606B Intermittent No Crank, No Start, or Reduced Power loss
  of data multiple U codes or Power door locks intermittently or
  completely inoperative.
• GM, 2012, Service Bullettin – PIT5606H Power Door Locks Cycle or Intermittently Inoperative –
  Loss of Data With Multiple U-Codes –Unwanted Seat or Memory
  Mirror Movement or Doesn’t Function –Intermittent No Crank/No
  Start or Reduced Power.