What Does U0144 Mean?
Communication failure with Body Control Module 'D'. This module represents a fourth body control zone in complex multi-module vehicle architectures.
Common Causes
35%
Body Control Module 'D' electronic failure or corrupted memory
25%
Electrical connector problems at BCM 'D' (water damage, corrosion, loose fit)
20%
CAN communication wiring damaged or disconnected
15%
Power supply interruption or ground circuit fault at BCM 'D'
5%
Module programming issue or version incompatibility
Diagnostic Steps
1
Step 1: Identify BCM 'D' location from service documentation and inspect connectors for physical damage
2
Step 2: Measure voltage supply and ground integrity at BCM 'D' using digital multimeter
3
Step 3: Check CAN-H and CAN-L signal presence and voltage at BCM 'D' connector terminals
4
Step 4: Use factory-level scan tool to attempt module reprogramming or reconfiguration
5
Step 5: Verify network integrity by checking termination resistance and testing for wiring faults
Estimated Repair Cost
$150 - $1,400
Parts + labor, varies by vehicle and location
Communication failure with Body Control Module 'D'. This module represents a fourth body control zone in complex multi-module vehicle architectures.
The most common cause of U0144 (Lost Communication With Body Control Module "D") is: Body Control Module 'D' electronic failure or corrupted memory
Typical repair costs for U0144 range from $150 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of BCM 'D' may disable specific vehicle features. Test all lighting, warning systems, and safety-related functions before operating vehicle.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0144 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network - Zone D
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
