U154B
Body Control Module Lost Communication With Rear Seat Control Module On LIN Bus
U154B is an OBD-II diagnostic trouble code meaning: Body Control Module Lost Communication With Rear Seat Control Module On LIN Bus. Common causes: open or short circuit in lin circuit, damage to connectors or corrosion of contacts. Estimated repair cost: $56–167.
Symptoms
- Rear seat controls do not work
- Check Engine light comes on
- Errors in other systems connected to the LIN bus
- Intermittent operation of rear seat functions
Causes
- Open or short circuit in LIN circuit
- Damage to connectors or corrosion of contacts
- Malfunction of the rear seat control module
- Module power problems
- Software error in BCM
How to Fix
- Check the integrity of the LIN bus wiring
- Inspect and clean module connectors
- Check the power and ground of the rear seat module
- Scan all modules on the LIN bus for errors
- If necessary, replace the rear seat control module
Related codes
FAQ
What does the U154B code mean?
U154B is an OBD-II diagnostic trouble code that indicates: Body Control Module Lost Communication With Rear Seat Control Module On LIN Bus
What causes a U154B error code?
The most common causes of U154B include: Open or short circuit in LIN circuit; Damage to connectors or corrosion of contacts; Malfunction of the rear seat control module; Module power problems.
How do I fix a U154B diagnostic trouble code?
To fix U154B: Check the integrity of the LIN bus wiring. Inspect and clean module connectors. Check the power and ground of the rear seat module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U154B?
Yes, but get it checked soon
How much does it cost to fix U154B?
The estimated repair cost for U154B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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