B1755 Hazard Flash Output Circuit Short Battery

Definition

Common causes

• Shorted wiring or connectors in the hazard flash output circuit
• Faulty hazard switch
• Malfunctioning body control module (BCM)
• Corroded or damaged connectors
• Grounding issues in the circuit
• Faulty relay associated with the hazard lights

Common misdiagnoses

• Faulty Body Control Module (BCM)
• Shorted wiring or connectors
• Defective turn signal switch
• Malfunctioning hazard switch
• Grounding issues
• Battery or charging system problems
• Incorrectly installed aftermarket accessories

Troubleshooting steps

1. 1. Verify the Code

   Use an OBD-II scanner to confirm the presence of the B1755 code

2. 2. Check for any additional codes that may provide more context or related issues

3. 3. Inspect the Wiring and Connectors

   Visual Inspection: Check the wiring harness and connectors related to the hazard flash output circuit for any signs of damage, corrosion, or loose connections

4. 4. Continuity Test

   Use a multimeter to check for continuity in the wiring. Look for any shorts to ground or battery voltage

5. 5. Check the Hazard Switch

   Inspect the hazard switch for proper operation. A malfunctioning switch can cause a short circuit

6. 6. If possible, test the switch with a multimeter to ensure it is functioning correctly

7. 7. Examine the Body Control Module (BCM)

   The BCM often controls the hazard lights. Check for any faults or issues with the BCM

8. 8. If you have access to a scan tool, check for BCM-related codes or data that may indicate a problem

9. 9. Inspect Related Components

   Check other components that may be connected to the hazard flash output circuit, such as relays or fuses

10. 10. Ensure that the fuses related to the hazard lights are intact and functioning

11. 11. Perform a Visual Inspection of the Circuit

    Look for any signs of wear, fraying, or damage in the circuit that could lead to a short

12. 12. Pay special attention to areas where the wiring may be exposed to heat or abrasion

13. 13. Test the Hazard Light Functionality

    Manually activate the hazard lights and observe their operation. Check if they flash correctly and if the dashboard indicators respond appropriately

14. 14. Check for Ground Issues

    Ensure that the ground connections for the hazard circuit are secure and free of corrosion

15. 15. A poor ground can lead to erratic behavior and may trigger the B1755 code

16. 16. Clear the Code and Test Drive

    After performing the above checks and repairs, clear the code using the OBD-II scanner

17. 17. Take the vehicle for a test drive to see if the code returns

18. 18. Consult Repair Manuals or Technical Service Bulletins (TSBs)

    If the issue persists, consult the vehicle’s repair manual or look for any TSBs related to the B1755 code for specific guidance related to your vehicle make and model.1

19. 19. Seek Professional Help

    If you are unable to resolve the issue after following these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle. By following these troubleshooting steps, you should be able to identify and address the cause of the B1755 code effectively