WOMS
U code network Medium severity

U1037 Invalid or Missing Data for Vehicle Speed

The OBD2 code U1037 indicates that the vehicle's control module has detected invalid or missing data related to vehicle speed, which may affect the performance of various systems

Definition

The OBD2 code U1037 indicates that the vehicle's control module has detected invalid or missing data related to vehicle speed, which may affect the performance of various systems

Common causes

  • Faulty vehicle speed sensor
  • Damaged wiring or connectors
  • Poor ground connections
  • Malfunctioning engine control module (ECM)
  • Issues with the transmission control module (TCM)
  • Faulty ABS module
  • Corrupted data communication between modules
  • Software glitches or updates needed in the ECM/TCM

Common misdiagnoses

  • Faulty Vehicle Speed Sensor (VSS)
  • Malfunctioning Engine Control Module (ECM)
  • Wiring issues or short circuits in the speed sensor circuit
  • Faulty ABS module
  • Incorrect tire size or calibration issues
  • Transmission problems
  • Faulty or corroded connectors
  • Issues with the instrument cluster

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Codes related to the transmission, ABS, or other systems may provide additional context

  2. 2. Inspect Vehicle Speed Sensor (VSS)

    Locate the vehicle speed sensor and inspect it for any physical damage or disconnection

  3. 3. Check the wiring and connectors for corrosion, fraying, or loose connections

  4. 4. If possible, test the VSS with a multimeter to ensure it is functioning correctly

  5. 5. Examine Wiring and Connectors

    Inspect the wiring harnesses and connectors associated with the VSS and the control modules for any signs of damage or poor connections

  6. 6. Look for any signs of short circuits, open circuits, or grounding issues

  7. 7. Check for Software Updates

    Sometimes, the issue may be related to outdated software in the vehicle's control modules. Check with the manufacturer for any available updates

  8. 8. Inspect the Instrument Cluster

    If the vehicle speed is not being displayed correctly on the instrument cluster, there may be an issue with the cluster itself. Check for any faults or malfunctions in the cluster

  9. 9. Test the Control Modules

    If the VSS and wiring are in good condition, the issue may lie within the control modules (e.g., PCM, TCM). Use a scan tool to check for communication errors between modules

  10. 10. Perform a reset of the control modules if necessary

  11. 11. Check for Ground Issues

    Ensure that all ground connections related to the VSS and control modules are secure and free of corrosion

  12. 12. Perform a Visual Inspection

    Conduct a thorough visual inspection of the engine bay and undercarriage for any signs of damage or wear that could affect the VSS or related components

  13. 13. Clear Codes and Test Drive

    After performing any repairs or inspections, clear the trouble codes and take the vehicle for a test drive to see if the code reappears

  14. 14. Consult a Professional

    If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the U1037 code