Cadillac U1889: Hybrid Control Module (HCM) Lost Communication With Body Control Module (BCM)
Is your scanner showing Cadillac U1889?
No worries. We'll show you what it means and how to deal with it.
Cadillac U1889: Hybrid Control Module (HCM) Lost Communication With Body Control Module (BCM)
OVERVIEWWhat Does The Cadillac U1889 Code Mean?
Conditions for setting the DTC: Voltage supplied to the module is in the normal operating voltage range of 9-16 volts.
What Are The Potential Causes Of The Cadillac U1889 Code?
Ensure all power and ground circuits to the electric-hydraulic power steering (EHPS) module including the motor are tested. A loss of voltage or ground to the EHPS hydraulic motor as well as to the module may be the causes.
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 Body Control Module
>>> GM Genuine Parts 84349032 Electronic Suspension Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac U1889, DTCDECODE.
