Lost Communication With Body Control Module A
What does U0141 mean?
The U0141 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Body Control Module A. This is a moderate severity code.
Common Symptoms
- Multiple body electrical malfunctions
- Dashboard warning lights
- Power accessories inoperative
- Lighting malfunctions
Probable Causes (Ranked by Likelihood)
- Failed body control module A Very High
- CAN bus wiring fault to BCM A High
- BCM A connector corrosion Moderate
- BCM A power supply failure Low
Step-by-Step Diagnostic Procedure
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Check BCM A power and ground circuits
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Inspect BCM A connector for corrosion or water damage
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Verify CAN bus wiring to BCM A
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Check for water intrusion in BCM A mounting area
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Replace BCM A if communication lost
Frequently Asked Questions
Can I drive with code U0141?
Drive short distances only. Lost communication codes indicate a module has stopped communicating on the vehicle network. The affected system may not function correctly.
What causes U0141?
The most common cause is a failed module or a wiring issue in the CAN bus network. Failed body control module A is the most likely cause. Power supply, ground, and connector issues should be checked before replacing any module.
Is U0141 expensive to fix?
Repair costs range from $200 - $1000 (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.