U0142
UNetworkLost Communication With Body Control Module B
What does this code mean?
Severity : MediumU0142 reports lost communication with body control module "B". Some vehicles split body functions between several modules. If this module stops responding on the network, lighting, locking or other equipment can misbehave. Exactly which functions it handles depends on the manufacturer.
Symptoms
- Several warning lights on the dashboard.
- Lighting, locking or wipers not working.
- Possible starting problem.
- Battery draining on some vehicles.
Possible causes
- Failed fuse or supply to module B.
- Corroded connector, often from water getting in.
- Open or shorted communication lines.
- Faulty module B.
- Low battery voltage.
Diagnosis and repair
- Check the battery and the module fuses.
- Check power and ground at the module with a multimeter.
- Inspect the connector and look for signs of moisture.
- Test the CAN lines up to the module.
- Replace or reprogram the module if needed, then clear the codes.
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Code
U0142
Category
Network
Prefix
U
Standard
OBD-II / SAE J2012