WOMS
P code powertrain High severity

P0717 Input/Turbine Speed Sensor A Circuit No Signal

The OBD2 code P0717 indicates that the vehicle's transmission control module has detected no signal from the input or turbine speed sensor A, which measures the rotational speed of the transmission input shaft

Definition

The OBD2 code P0717 indicates that the vehicle's transmission control module has detected no signal from the input or turbine speed sensor A, which measures the rotational speed of the transmission input shaft

Common causes

  • Faulty input/turbine speed sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Failed transmission control module (TCM)
  • Low transmission fluid level
  • Contaminated transmission fluid
  • Internal transmission failure

Common misdiagnoses

  • Faulty Transmission Control Module (TCM)
  • Faulty Engine Control Module (ECM)
  • Wiring issues or shorts in the harness
  • Faulty Input/Turbine Speed Sensor
  • Transmission fluid issues (low or contaminated fluid)
  • Faulty Torque Converter
  • Incorrectly installed or damaged transmission components
  • Faulty vehicle speed sensor (VSS)

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues present

  2. 2. Inspect the Wiring and Connectors

    Visually inspect the wiring and connectors associated with the Input/Turbine Speed Sensor. Look for

  3. 3. Damaged, frayed, or corroded wires

  4. 4. Loose or disconnected connectors

  5. 5. Signs of moisture or dirt that could affect the connection

  6. 6. Test the Input/Turbine Speed Sensor

    Use a multimeter to test the sensor's resistance and voltage output. Compare the readings to the specifications in the vehicle's service manual

  7. 7. If the sensor is faulty, it may need to be replaced

  8. 8. Check the Sensor's Ground

    Ensure that the sensor has a good ground connection. A poor ground can lead to a no signal condition

  9. 9. Inspect the Transmission Fluid

    Check the transmission fluid level and condition. Low or dirty fluid can affect sensor performance. If the fluid is low, top it off and check for leaks

  10. 10. Test the ECM

    If the sensor and wiring are in good condition, the issue may lie with the Engine Control Module (ECM). Check for any software updates or reprogramming that may be needed

  11. 11. Check for Mechanical Issues

    Inspect the transmission for any mechanical issues that could affect the sensor's operation, such as a damaged input shaft or other internal components

  12. 12. 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

  13. 13. Consult a Professional

    If the issue persists after following these steps, it may be best to consult a professional mechanic or technician who has experience with transmission issues and OBD-II diagnostics. By following these troubleshooting steps, you can systematically identify and resolve the issue related to the P0717 code