WOMS
P code powertrain Medium severity

P1167 Invalid Test throttle not depressed

The OBD2 code P1167 indicates that the vehicle's throttle position was not detected as being depressed during a test, which may suggest an issue with the throttle position sensor or related components

Definition

The OBD2 code P1167 indicates that the vehicle's throttle position was not detected as being depressed during a test, which may suggest an issue with the throttle position sensor or related components

Common causes

  • Throttle position sensor malfunction
  • Faulty accelerator pedal position sensor
  • Wiring issues or poor connections in the throttle control circuit
  • Malfunctioning engine control module (ECM)
  • Vacuum leaks in the intake system
  • Faulty or dirty throttle body
  • Issues with the cruise control system
  • Software glitches in the vehicle's computer system

Common misdiagnoses

  • Throttle position sensor malfunction
  • Accelerator pedal position sensor issue
  • Faulty mass air flow sensor
  • Vacuum leaks
  • Engine control module (ECM) failure
  • Wiring or connector issues
  • Fuel delivery problems
  • Ignition system faults
  • Air intake system problems
  • Exhaust gas recirculation (EGR) system issues

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. Check the throttle position sensor for proper operation. Ensure that it is functioning correctly and that there are no loose connections or damaged wiring

  4. 4. Test the TPS with a multimeter to ensure it is providing the correct voltage readings as the throttle is opened and closed

  5. 5. Examine the Throttle Body

  6. 6. Inspect the throttle body for any signs of dirt, carbon buildup, or mechanical obstruction that could prevent it from opening or closing properly

  7. 7. Clean the throttle body if necessary, using an appropriate throttle body cleaner

  8. 8. Check Accelerator Pedal Position Sensor

  9. 9. Verify that the accelerator pedal position sensor is functioning correctly. This sensor communicates the position of the accelerator pedal to the ECM

  10. 10. Inspect the wiring and connectors for damage or corrosion

  11. 11. Inspect Wiring and Connectors

  12. 12. Check all related wiring and connectors for signs of damage, corrosion, or loose connections. Pay special attention to the wiring harnesses connected to the throttle body and sensors

  13. 13. Test the ECM

  14. 14. If all other components appear to be functioning correctly, the issue may lie with the ECM itself. Check for software updates or reprogramming if applicable

  15. 15. In some cases, a faulty ECM may need to be replaced

  16. 16. Perform a Throttle Body Relearn Procedure

  17. 17. After cleaning or replacing components, it may be necessary to perform a throttle body relearn procedure. This can often be done using a scan tool or by following specific steps outlined in the vehicle's service manual

  18. 18. Check for Vacuum Leaks

  19. 19. Inspect the intake system for any vacuum leaks that could affect the throttle operation. A vacuum leak can cause erratic engine behavior and may trigger the P1167 code

  20. 20. Test Drive the Vehicle

  21. 21. After performing repairs or replacements, clear the trouble codes and take the vehicle for a test drive to see if the code returns

  22. 22. Refer to the vehicle's service manual for specific diagnostic procedures and specifications related to the throttle control system. If you are not comfortable performing these steps or if the issue persists after troubleshooting, it may be best to consult a professional mechanic for further diagnosis and repair