WOMS
B code body Medium severity

B2106 Throttle Position Input Out of Range High

The OBD2 code B2106 indicates that the throttle position sensor is reporting a voltage or signal that is higher than the expected range, suggesting a potential issue with the sensor or its circuit

Definition

The OBD2 code B2106 indicates that the throttle position sensor is reporting a voltage or signal that is higher than the expected range, suggesting a potential issue with the sensor or its circuit

Common causes

  • Faulty throttle position sensor (TPS)
  • Wiring issues or damaged connectors
  • Poor electrical connections
  • Throttle body malfunction
  • Engine control module (ECM) issues
  • Calibration errors
  • Vacuum leaks
  • Software glitches or updates needed

Common misdiagnoses

  • Throttle Position Sensor (TPS) failure
  • Accelerator Pedal Position Sensor (APPS) issues
  • Wiring or connector problems
  • Engine Control Module (ECM) malfunction
  • Vacuum leaks
  • Faulty mass airflow sensor (MAF)
  • Issues with the electronic throttle control system
  • Software or calibration errors in the ECM

Troubleshooting steps

  1. 1. Check for Additional Codes

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

  2. 2. Inspect Throttle Position Sensor (TPS)

  3. 3. Visual Inspection

    Check the throttle position sensor for any physical damage, loose connections, or corrosion at the connector

  4. 4. Wiring Check

    Inspect the wiring harness for any frayed wires, shorts, or open circuits

  5. 5. Test the Throttle Position Sensor

  6. 6. Use a multimeter to measure the voltage output of the TPS. The voltage should change smoothly as the throttle is opened and closed. If the voltage is stuck at a high value or does not change, the sensor may be faulty

  7. 7. Compare the readings to the manufacturer's specifications

  8. 8. Check Throttle Body

  9. 9. Inspect the throttle body for carbon buildup or obstructions that could affect the throttle plate's movement

  10. 10. Ensure that the throttle plate moves freely and is not sticking

  11. 11. Inspect the Accelerator Pedal Position Sensor

  12. 12. If the vehicle has an electronic throttle control system, check the accelerator pedal position sensor for proper operation. A malfunctioning pedal sensor can send incorrect signals to the ECM

  13. 13. Check for Vacuum Leaks

  14. 14. Inspect the intake system for any vacuum leaks that could cause an incorrect air-fuel mixture, affecting throttle position readings

  15. 15. ECM/PCM Update

  16. 16. Check if there are any available updates for the engine control module (ECM) or powertrain control module (PCM) that may address known issues related to throttle position

  17. 17. Clear Codes and Test Drive

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

  19. 19. Professional Diagnosis

  20. 20. If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who can perform more advanced diagnostics, including checking the ECM for faults. By following these steps, you should be able to identify and resolve the issue related to the B2106 code. Always refer to the vehicle's service manual for specific procedures and specifications