WOMS
B code body Medium severity

B1567 Lamp Headlamp High-Beam Circuit Failure

The OBD2 code B1567 indicates a failure in the high-beam circuit of the headlamp system, typically related to a malfunction in the wiring, bulb, or control module

Definition

The OBD2 code B1567 indicates a failure in the high-beam circuit of the headlamp system, typically related to a malfunction in the wiring, bulb, or control module

Common causes

  • Faulty high-beam headlamp bulb
  • Damaged wiring or connectors in the high-beam circuit
  • Failed headlamp relay
  • Malfunctioning body control module (BCM)
  • Corroded or loose electrical connections
  • Blown fuse in the high-beam circuit
  • Faulty switch or control for high-beam operation

Common misdiagnoses

  • Faulty headlight bulb
  • Bad headlight relay
  • Wiring issues or shorts in the circuit
  • Malfunctioning body control module (BCM)
  • Incorrectly installed or damaged headlight assembly
  • Faulty switch or stalk assembly
  • Grounding issues
  • Corroded connectors or terminals

Troubleshooting steps

  1. 1. Check the Headlight Bulbs

    Inspect the high-beam headlight bulbs for any signs of damage or burnout. Replace any faulty bulbs

  2. 2. Inspect the Wiring and Connectors

    Examine the wiring harness and connectors associated with the high-beam headlights for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components

  3. 3. Test the High-Beam Switch

    The high-beam switch (often located on the steering column or on the dashboard) can fail. Test the switch for continuity using a multimeter. If it’s faulty, replace it

  4. 4. Check the Fuses

    Locate the fuse box and check the fuses related to the headlight circuit. Replace any blown fuses

  5. 5. Inspect the Relay

    If your vehicle uses a relay for the high-beam circuit, test the relay to ensure it is functioning properly. Swap it with a similar relay (if available) to see if the problem persists

  6. 6. Scan for Additional Codes

    Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  7. 7. Check the Ground Connections

    Ensure that the ground connections for the headlight circuit are secure and free of corrosion. A poor ground can lead to circuit failures

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

    In some vehicles, the BCM controls the headlight circuits. If all other components check out, the BCM may need to be tested or reprogrammed

  9. 9. Perform a Visual Inspection

    Look for any signs of water intrusion or physical damage in the headlight assembly and surrounding areas

  10. 10. Consult the Vehicle’s Service Manual

    Refer to the specific service manual for your vehicle for wiring diagrams and additional troubleshooting steps tailored to your make and model.1

  11. 11. Professional Diagnosis

    If the issue persists after performing these steps, consider seeking help from a professional mechanic who can conduct a more thorough diagnosis. By following these steps, you should be able to identify and resolve the issue related to the B1567 code. Always ensure safety precautions are taken when working with electrical components in your vehicle