U1548
Body Control Module Lost Communication With Left Rear Window Switch On LIN Bus
U1548 is an OBD-II diagnostic trouble code meaning: Body Control Module Lost Communication With Left Rear Window Switch On LIN Bus. Common causes: open or short circuit in lin circuit, left rear window switch malfunction. Estimated repair cost: $17–89.
Symptoms
- Left rear window doesn't work
- The window does not respond to commands from the switch
- Other functions related to the body module may malfunction
- Check Engine Light or Other Warning Lights Come On
Causes
- Open or short circuit in LIN circuit
- Left rear window switch malfunction
- Connector damage or contact corrosion
- Body Module (BCM) Problems
- Damage to the wiring harness in the door
How to Fix
- Check the integrity of the wiring and connectors in the LIN circuit
- Test left rear window switch
- Clean connector contacts from corrosion
- Check power and ground circuit
- If necessary, replace the switch or body module
Related codes
FAQ
What does the U1548 code mean?
U1548 is an OBD-II diagnostic trouble code that indicates: Body Control Module Lost Communication With Left Rear Window Switch On LIN Bus
What causes a U1548 error code?
The most common causes of U1548 include: Open or short circuit in LIN circuit; Left rear window switch malfunction; Connector damage or contact corrosion; Body Module (BCM) Problems.
How do I fix a U1548 diagnostic trouble code?
To fix U1548: Check the integrity of the wiring and connectors in the LIN circuit. Test left rear window switch. Clean connector contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1548?
Limited driving only, diagnose soon
How much does it cost to fix U1548?
The estimated repair cost for U1548 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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