Lost Communication With Drive Motor Control Module
What does U0110 mean?
The U0110 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Drive Motor Control Module. This is a critical severity code.
Common Symptoms
- Check Engine Light illuminated
- Hybrid/EV system warning lights
- Vehicle may not move
- No electric motor operation
- Reduced power or limp mode
Probable Causes (Ranked by Likelihood)
- Failed drive motor control module Very High
- High voltage system fault High
- CAN bus wiring fault to motor controller Moderate
- Module power supply loss Low
Step-by-Step Diagnostic Procedure
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Check drive motor module power supply and grounds
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Inspect high voltage connections and safety interlock
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Verify CAN bus wiring to the motor control module
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Check for high voltage system faults or safety disconnects
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Replace drive motor control module if communication lost -- requires high voltage safety training
Frequently Asked Questions
Can I drive with code U0110?
Do not drive. Lost communication codes indicate a module has stopped communicating on the vehicle network. The affected system is completely inoperative.
What causes U0110?
The most common cause is a failed module or a wiring issue in the CAN bus network. Failed drive motor control module is the most likely cause. Power supply, ground, and connector issues should be checked before replacing any module.
Is U0110 expensive to fix?
Repair costs range from $500 - $3000 (parts and labor). Wiring repairs are on the lower end, while module replacement is on the higher end. The module may also need to be programmed after replacement.