WOMS
U code network Medium severity

U1173 SCP (J1850) Invalid or Missing Data for Remote Button Control

The OBD2 code U1173 SCP (J1850) indicates that there is invalid or missing data related to the remote button control system, which may affect the functionality of remote features in the vehicle

Definition

The OBD2 code U1173 SCP (J1850) indicates that there is invalid or missing data related to the remote button control system, which may affect the functionality of remote features in the vehicle

Common causes

  • Faulty remote button control module
  • Damaged wiring or connectors
  • Poor ground connection
  • Malfunctioning vehicle communication network
  • Interference from other electronic devices
  • Software or firmware issues in the control module
  • Low battery voltage or weak battery
  • Corroded or loose terminals

Common misdiagnoses

  • Faulty remote key fob
  • Weak or dead battery in the key fob
  • Malfunctioning body control module (BCM)
  • Wiring issues or shorts in the remote control circuit
  • Software glitches in the vehicle's electronic systems
  • Incorrectly programmed key fob
  • Issues with the vehicle's central locking system
  • Faulty antenna or receiver for remote signals

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Addressing related codes can help in diagnosing the issue more effectively

  2. 2. Inspect the Remote Control

    Battery Check: Ensure that the battery in the remote control is functioning properly. Replace it if necessary

  3. 3. Functionality Test

    Test the remote control to see if it operates correctly. If it doesn’t work, the remote may be faulty

  4. 4. Examine the Wiring and Connectors

    Visual Inspection: Check the wiring and connectors related to the remote button control system for any signs of damage, corrosion, or loose connections

  5. 5. Connector Integrity

    Ensure that all connectors are securely attached and free from dirt or moisture

  6. 6. Check the Body Control Module (BCM)

    Functionality: The BCM is responsible for processing signals from the remote control. Ensure that the BCM is functioning correctly

  7. 7. Software Updates

    Check if there are any software updates available for the BCM that may address known issues

  8. 8. Test the Communication Network

    Network Integrity: Use a scan tool to check the communication network (SCP/J1850) for any faults. Look for issues in the data bus that may affect communication

  9. 9. Signal Testing

    If possible, test the signal from the remote control to the BCM to ensure it is being received correctly

  10. 10. Inspect for Interference

    Environmental Factors: Check for any potential sources of interference that could affect the remote control signal, such as other electronic devices or physical obstructions

  11. 11. Perform a Reset

    Clear Codes: Clear the trouble codes using the OBD-II scanner and see if the code returns after a test drive

  12. 12. Battery Disconnect

    Disconnect the vehicle battery for a few minutes to reset the vehicle’s electronic systems, then reconnect and test again

  13. 13. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the U1173 code for your specific vehicle make and model. Manufacturers may have issued guidance or fixes for known issues

  14. 14. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose more complex issues.Conclusion By following these troubleshooting steps, you can systematically identify and resolve the issue related to the U1173 code. Always ensure safety precautions are taken when working on vehicle electronics, and consult a professional if you are unsure about any steps