U1558
Body Control Module Lost Communication With Passenger Seat Heating and Cooling Switch On LIN Bus
U1558 is an OBD-II diagnostic trouble code meaning: Body Control Module Lost Communication With Passenger Seat Heating and Cooling Switch On LIN Bus. Common causes: open or short circuit in the lin bus circuit, heated seat switch malfunction. Estimated repair cost: $17–89.
Symptoms
- Heated passenger seat does not work
- Heated seat indicator does not light up
- Error on the dashboard
- Seat heating intermittent
- Other systems on the LIN bus may not work correctly
Causes
- Open or short circuit in the LIN bus circuit
- Heated seat switch malfunction
- Body Module (BCM) Problems
- Poor contact in connectors
- Corroded or damaged wiring
How to Fix
- Check the integrity of the LIN bus wiring
- Check connections at switch and BCM connectors
- Test the heated seat switch
- Check power and ground of switch
- Replace switch or BCM if necessary
Related codes
FAQ
What does the U1558 code mean?
U1558 is an OBD-II diagnostic trouble code that indicates: Body Control Module Lost Communication With Passenger Seat Heating and Cooling Switch On LIN Bus
What causes a U1558 error code?
The most common causes of U1558 include: Open or short circuit in the LIN bus circuit; Heated seat switch malfunction; Body Module (BCM) Problems; Poor contact in connectors.
How do I fix a U1558 diagnostic trouble code?
To fix U1558: Check the integrity of the LIN bus wiring. Check connections at switch and BCM connectors. Test the heated seat switch. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1558?
Yes, but get it checked soon
How much does it cost to fix U1558?
The estimated repair cost for U1558 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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