U0110
Lost Communication With Drive Motor Control Module
Network / Communication Network/Communication CAN Bus Communication 🟡 Moderate — Fix within a week
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What This Actually Means
In plain language — no jargon

Your car's main computer has lost its connection to the motor control module, like a phone losing signal to a tower. Without this communication, the engine cannot receive proper commands and will run poorly or not start.

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Symptoms You May Notice
3 known symptoms for this code
Engine cranks but will not start or starts intermittently
Check Engine Light illuminated with reduced engine power
Rough idle, stalling, or limp mode activation
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Embedded Systems Insight
What the ECU/ECM is actually computing

The main ECU continuously communicates with the Drive Motor Control Module via the CAN bus network to send fuel injection and ignition timing commands. The system monitors for valid data messages and timeouts on this communication link. If no valid response is received within a set time window, the fault is triggered.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
CAN Bus Message Response Time < 100 milliseconds > 100 milliseconds or no response
Module Handshake Signal Present and valid Missing or corrupted for > 1 second
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Battery terminals and connections
Clean corrosion from battery posts and tighten all cable connections to restore proper voltage and ground paths.
2
CAN bus wiring harness and connectors
Inspect the CAN bus wiring under the dashboard and engine bay for loose, damaged, or corroded connectors and reseat them firmly.
3
Drive Motor Control Module
If wiring is sound, the module itself may require replacement or reprogramming by a dealer.