WOMS
B code body Medium severity

B1267 Servo Motor Airintake Right Circuit Failure

The OBD2 code B1267 indicates a failure in the servo motor circuit for the right air intake, which may affect the operation of the vehicle's air intake system

Definition

The OBD2 code B1267 indicates a failure in the servo motor circuit for the right air intake, which may affect the operation of the vehicle's air intake system

Common causes

  • Faulty servo motor
  • Damaged wiring or connectors
  • Short circuit in the circuit
  • Open circuit in the circuit
  • Failed control module
  • Poor ground connection
  • Corroded connectors
  • Mechanical obstruction in the intake system

Common misdiagnoses

  • Throttle body issues
  • Mass air flow sensor failure
  • Intake manifold leaks
  • Electrical wiring problems
  • Engine control module (ECM) faults
  • Vacuum leaks
  • Other servo motor failures
  • Air intake temperature sensor issues

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Visually inspect the wiring and connectors associated with the servo motor and air intake system. Look for signs of damage, corrosion, or loose connections

  3. 3. Pay special attention to the wiring harness that connects to the servo motor

  4. 4. Test the Servo Motor

    If accessible, test the servo motor for proper operation. You can do this by applying direct power to the motor to see if it moves as expected

  5. 5. If the motor does not operate correctly, it may need to be replaced

  6. 6. Check for Vacuum Leaks

    Inspect the intake system for any vacuum leaks that could affect the operation of the servo motor. Use a smoke machine or spray soapy water to identify leaks

  7. 7. Inspect the Air Intake System

    Check the entire air intake system for blockages or restrictions that could affect airflow. Ensure that the air filter is clean and that there are no obstructions in the intake path

  8. 8. Test the Control Circuit

    Use a multimeter to test the voltage and ground at the servo motor connector. Ensure that the motor is receiving the correct voltage and that the ground is solid

  9. 9. Check for continuity in the wiring between the control module and the servo motor

  10. 10. Check the Control Module

    If all other components check out, the issue may lie within the vehicle's control module. Ensure that the module is functioning correctly and that it is sending the appropriate signals to the servo motor

  11. 11. Clear Codes and Test Drive

    After performing repairs or replacements, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  12. 12. Seek Professional Help

    If you are unable to diagnose or fix the issue, consider seeking help from a qualified mechanic or automotive technician who has experience with your vehicle make and model. By following these steps, you should be able to identify and resolve the issue related to the B1267 code