OBD2 U0144

Severity

Summary

Code U0144 indicates lost communication with Body Control Module 'D'. This module is typically located under the dashboard or in the center console and controls various vehicle functions such as climate control, power windows, and interior lighting.

Symptoms

• Stored trouble code
• Multiple other codes related to serial communications issues may be present
• Warning lights illuminated
• Interior lighting not working
• Vehicle may not start or is immobilized completely
• Keyless entry system malfunctioning
• Security, anti-theft, and central locking systems erratic or non-functional
• ABS, Stability Control, Traction Control systems unavailable
• Airbags and SRS features might not deploy
• Instruments behaving erratically or not working at all
• Power seats and windows may not work

Common Causes

• Internal corrosion due to water ingress into the BCM
• Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors in CAN bus or other serial communications system
• Corrupted BCM software
• Excessive heat, moisture, or vibration
• Incorrect jump-starting procedures
• Abnormally high or low system voltages
• Charging system failure
• Battery failure

Diagnosis

1. Check for water ingress and corrosion in the BCM area
2. Inspect wiring and connectors for damage or corrosion
3. Verify system voltages are within normal range
4. Check battery condition and charging system

Fixes

FAQ