WOMS
B code body Medium severity

B1695 Autolamp On Circuit Short To Battery

The OBD2 code B1695 indicates a short circuit in the autolamp on circuit, meaning that the circuit is receiving constant power from the battery instead of functioning normally

Definition

The OBD2 code B1695 indicates a short circuit in the autolamp on circuit, meaning that the circuit is receiving constant power from the battery instead of functioning normally

Common causes

  • Shorted wiring or connectors
  • Faulty autolamp relay
  • Malfunctioning body control module (BCM)
  • Corroded or damaged connectors
  • Incorrectly installed aftermarket accessories
  • Faulty headlight switch
  • Grounding issues

Common misdiagnoses

  • Faulty headlight switch
  • Defective body control module (BCM)
  • Shorted wiring harness
  • Malfunctioning autolamp sensor
  • Incorrectly installed aftermarket lighting
  • Battery or charging system issues
  • Faulty relay or fuse related to lighting system

Troubleshooting steps

  1. 1. Check the Vehicle's Wiring:

    Inspect the wiring harness and connectors related to the autolamp circuit for any signs of damage, fraying, or corrosion

  2. 2. Look for any exposed wires that may be shorting against the vehicle chassis or other components

  3. 3. Inspect the Autolamp Relay:

    Locate the autolamp relay in the fuse box and check for proper operation. You can swap it with a similar relay to see if the problem persists

  4. 4. Ensure that the relay contacts are clean and free of corrosion

  5. 5. Examine the Fuse:

    Check the fuse associated with the autolamp circuit. If it is blown, replace it and see if the code returns

  6. 6. Inspect the fuse box for any signs of damage or corrosion

  7. 7. Test the Autolamp Sensor:

    If your vehicle is equipped with a light sensor, test it to ensure it is functioning correctly. A faulty sensor can cause incorrect signals to be sent to the control module

  8. 8. Check the Control Module:

    Inspect the body control module (BCM) or any related control modules for faults. Ensure that the module is receiving the correct input signals

  9. 9. If necessary, perform a reset or reprogramming of the module

  10. 10. Scan for Additional Codes:

    Use an OBD-II scanner to check for any additional trouble codes that may provide more context to the issue

  11. 11. Address any other codes that may be present, as they could be related

  12. 12. Perform a Visual Inspection:

    Look for any aftermarket modifications or installations that may have affected the wiring or components related to the autolamp circuit

  13. 13. Ensure that all connections are secure and that there are no loose or disconnected wires

  14. 14. Consult Wiring Diagrams:

    Refer to the vehicle's service manual for wiring diagrams to understand the circuit layout and identify potential problem areas

  15. 15. Test with a Multimeter:

    Use a multimeter to check for voltage and continuity in the autolamp circuit. This can help identify where the short may be occurring

  16. 16. Seek Professional Help

  17. 17. If the issue persists after performing these steps, consider consulting a professional mechanic or automotive technician for a more in-depth diagnosis. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1695 code