OBD-II code U0110 indicates that the primary controller (typically the PCM/ECM or a hybrid system gateway module) has stopped receiving messages from the Drive Motor Control Module over the in-vehicle communication network. The Drive Motor Control Module is the inverter/controller that commands the high-voltage traction motor in hybrid and electric vehicles, so a loss of communication usually disables electric propulsion.
The most common cause. The module's harness runs through harsh areas of the chassis where heat, vibration, and moisture degrade insulation and terminals, breaking the data and power circuits.
A blown fuse, failed relay, or corroded ground strap can remove operating power from the module, causing it to drop off the network even though the module itself is good.
A shorted CAN pair, failed terminating resistor, or another module flooding the bus with bad messages can prevent any controller, including the drive motor module, from being heard.
The inverter itself can fail due to overheating, internal transistor faults, or coolant pump failure. It is a real cause but less frequent than wiring and power supply problems.
If a module was recently swapped or reflashed, a missing or incorrect calibration can prevent normal network handshake and set U0110 even with good hardware.
It is possible, but genuinely uncommon. Technicians should exhaust wiring, power, ground, and the Drive Motor Control Module itself before considering the PCM.
No. Despite the code naming a 'control module' failure, in real-world diagnostics U0110 is almost always a wiring, connector, power-feed, ground, or CAN-bus problem. The PCM itself is rarely the cause and should only be considered after every other possibility has been ruled out by direct testing.
It depends on the vehicle, but generally no. Electric drive assistance is typically disabled, which on a hybrid means poor performance and high fuel consumption, and on a battery-electric vehicle it can mean no propulsion at all. The vehicle should be diagnosed promptly, especially if the symptom is intermittent or worsening.
Not directly. U0110 points to communication with the Drive Motor Control Module (the inverter), not the battery. The hybrid battery has its own codes and its own ECU. A weak 12V battery, however, can cause enough network instability to set U0110 and similar U-codes, so the 12V system should always be load-tested first.
A single underlying network fault, such as a shorted CAN pair, a failed module dragging the bus down, or a low 12V supply, will usually cause multiple controllers to drop off simultaneously. The presence of several U-codes points to a shared wiring or power issue rather than multiple independent component failures.