Cadillac U1890: Hybrid Control Module (HCM) Lost Communication With HVAC Control Module
Is your scanner showing Cadillac U1890?
No worries. We'll show you what it means and how to deal with it.
Cadillac U1890: Hybrid Control Module (HCM) Lost Communication With HVAC Control Module
OVERVIEWWhat Does The Cadillac U1890 Code Mean?
Voltage supplied to the module is in the normal operating voltage range of 9-16 volts.
What Are The Potential Causes Of The Cadillac U1890 Code?
For DTC U1892, 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 cause a loss of power.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac U1890, DTCDECODE.
