U0142
Lost Communication With Body Control Module B
U0142 is an OBD-II diagnostic trouble code meaning: Lost Communication With Body Control Module B. Common causes: open or short circuit in wiring harness, oxidized contacts in connectors. Estimated repair cost: $9–556.
Symptoms
- Lack of access to some vehicle functions
- Interior or dashboard lighting not working
- Problems with central locking
- Errors in the operation of power windows
- The alarm may not work correctly
Causes
- Open or short circuit in wiring harness
- Oxidized contacts in connectors
- Body Control Module (BCM) Malfunction
- Module power problems
- Damage to the CAN network interface
How to Fix
- Check the integrity of the wiring harness between the modules
- Clean and check all contacts in connectors
- Check BCM power and ground
- Scan all modules for additional errors
- Replace the body control module if necessary
Related codes
Error U0142 by Vehicle Brand
FAQ
What does the U0142 code mean?
U0142 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Body Control Module B
What causes a U0142 error code?
The most common causes of U0142 include: Open or short circuit in wiring harness; Oxidized contacts in connectors; Body Control Module (BCM) Malfunction; Module power problems.
How do I fix a U0142 diagnostic trouble code?
To fix U0142: Check the integrity of the wiring harness between the modules. Clean and check all contacts in connectors. Check BCM power and ground. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0142?
Yes, but get it checked soon
How much does it cost to fix U0142?
The estimated repair cost for U0142 is $9–556. Actual cost depends on your vehicle, location, and labor rates.
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