Skip to content
Book on WhatsApp

U0110

Lost Communication with Drive Motor Control Module

The Drive Motor Control Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. On a hybrid or EV the electric drive can shut down or limit power. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.

  • Check engine light: Yes
  • Emissions related: No
  • Repair difficulty: hard

Symptoms

  • Multiple warning lights may illuminate
  • Affected modules may go into limp mode or shut down
  • Specific functions inoperative depending on module
  • Diagnostic tools may show communication faults

Common causes

Ordered by how often each turns out to be the cause.

  • Drive motor module unpoweredCommon
  • CAN wiring to drive motor module brokenPossible
  • Gateway module routing CAN messages incorrectlyLess likely

Parts involved

  • Drive Motor Control Module
  • CAN Bus Wiring

U0110 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.