WOMS
U code network Medium severity

U1562 Invalid or Missing Data for Vehicle Speed

The OBD2 code U1562 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 U1562 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 connection
  • 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 shorts in the speed sensor circuit
  • Faulty ABS module
  • Incorrect tire size or calibration issues
  • Transmission problems
  • Issues with the instrument cluster
  • Faulty or corroded connectors in the speed sensor circuit

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Other codes can provide additional context for the issue

  2. 2. Inspect Vehicle Speed Sensor (VSS)

    Visual Inspection: Check the VSS for any physical damage, loose connections, or corrosion at the connector

  3. 3. Wiring

    Inspect the wiring harness for any signs of wear, fraying, or disconnection

  4. 4. Testing

    Use a multimeter to test the VSS for proper voltage and resistance according to the manufacturer's specifications

  5. 5. Check the Instrument Cluster

    Ensure that the instrument cluster is functioning correctly. If the speedometer is not working, it may indicate a problem with the cluster itself

  6. 6. Inspect CAN Bus Communication

    Check the communication lines (CAN bus) for any faults. Look for damaged wires or poor connections that could affect data transmission between modules

  7. 7. Use a scan tool to monitor live data and see if the vehicle speed is being reported correctly

  8. 8. Check for Ground Issues

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

  9. 9. Inspect Related Modules

    Check other modules that may rely on vehicle speed data, such as the Engine Control Module (ECM) or Transmission Control Module (TCM), for faults or communication issues

  10. 10. Update Software/Firmware

    If applicable, check if there are any software updates available for the vehicle's modules. Sometimes, manufacturers release updates to fix known issues

  11. 11. 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

  12. 12. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership with advanced diagnostic tools. By following these steps, you should be able to identify and resolve the issue related to the U1562 code