U1544 Code - Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus
Quick Answer
The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Left Rear Window Motor, Left Rear Window Motor harness is open or shorted, Left Rear Window Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1544 indicates Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus.
- Common causes
- Common causes include Faulty Left Rear Window Motor, Left Rear Window Motor harness is open or shorted, Left Rear Window Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U1544 Description
What are the Possible Causes of the DTC U1544?
- Faulty Left Rear Window Motor
- Left Rear Window Motor harness is open or shorted
- Left Rear Window Motor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC U1544?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1544 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- U1544 Buick — Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus
- U1544 Cadillac — Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus
- U1544 Chevrolet — Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus
- U1544 GMC — Body Control Module Lost Communication With Left Rear Window Motor On LIN Bus
Frequently Asked Questions about U1544 Code
1. What are the common symptoms of OBDII code U1544?
- Common symptoms include the left rear window not functioning properly, issues with the power window switch, and warning lights on the dashboard.
2. What could cause the Body Control Module to lose communication with the left rear window motor on the LIN bus?
- Possible causes include wiring issues, a faulty window motor, a malfunctioning power window switch, or a problem with the Body Control Module itself.
3. How can I diagnose the U1544 code related to the left rear window motor communication issue?
- Diagnose the code by checking the wiring connections, testing the left rear window motor, inspecting the power window switch, and scanning the Body Control Module for faults.
4. Can I still drive my vehicle with the U1544 code present?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid potential inconvenience or safety hazards.
5. What are some repair tips for fixing the communication problem between the Body Control Module and the left rear window motor?
- Repair tips include checking and repairing any damaged wiring, replacing the faulty window motor or power window switch, and resetting the Body Control Module.
6. Is it possible to reset the Body Control Module to resolve the U1544 code?
- Yes, you can try resetting the Body Control Module by disconnecting the vehicle's battery for a few minutes and then reconnecting it to see if the code clears.
7. How much does it typically cost to repair the U1544 code related to the left rear window motor issue?
- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts and labor ranging from $100 to $500 or more.
8. Can a DIY enthusiast fix the U1544 code problem at home?
- DIY enthusiasts with automotive repair skills and proper tools may be able to address the issue themselves by following repair guides or consulting with professional mechanics.
9. Are there any recalls or technical service bulletins related to the U1544 code in certain vehicle models?
- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins addressing the U1544 code in specific vehicle models.
10. How important is it to address the U1544 code promptly?
- While the vehicle may still be operable with this code, it is important to address it promptly to ensure proper functionality of the left rear window and prevent potential electrical issues in the future.
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