Lost Communication With Drive Motor Control Module A
What it means
U0110 means another module has stopped receiving data from the drive motor control module — the controller that runs the electric traction motor on a hybrid or EV. Because this module drives the wheels electrically, losing it commonly cuts propulsion, forces reduced power, or stops the car from entering ready/drive. It usually points to a wiring, power/ground, or bus fault at the controller, or a failed module — this is a high-priority code, not a comfort glitch.
Can I keep driving? Often not drivable normally — losing the drive motor controller can cut electric propulsion, force reduced power, or prevent the hybrid/EV system from starting.
Common symptoms
What you'll notice
- Hybrid/EV warning lights or 'service powertrain' message
- Loss of electric drive, reduced power, or limp mode
- Vehicle won't move or won't switch to ready/drive
- Other modules report lost communication with the drive motor controller
Common causes
Most likely first
- Damaged or corroded CAN wiring/connector at the drive motor control moduleLikely
- No power or ground to the drive motor control module (blown fuse, bad ground)Common
- Internally failed drive motor control moduleCommon
- Bus fault taking down the segment the controller sits onLess often
How to diagnose & fix
Work through it in order
- Scan all modules; confirm whether only the drive motor controller is missing or a whole bus segment is down.
- Check power, ground, and fuses feeding the drive motor control module.
- Inspect the CAN wiring and connectors at the module for damage, corrosion, and moisture.
- Verify CAN-High/CAN-Low resistance and voltages to rule out a bus wiring fault.
- If wiring and power are good and the module doesn't respond, replace/reprogram it per the service procedure, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0110?+
Can I just clear U0110?+
Related codes
Often seen with U0110
Read & clear U0110 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.