WOMS
U code network Medium severity

U046B Invalid Data Received From Global Positioning System Module

The OBD2 code U046B indicates that the vehicle's control module has received invalid or corrupted data from the Global Positioning System (GPS) module

Definition

The OBD2 code U046B indicates that the vehicle's control module has received invalid or corrupted data from the Global Positioning System (GPS) module

Common causes

  • Faulty GPS module
  • Poor GPS signal reception
  • Wiring issues or damaged connectors
  • Software or firmware glitches
  • Corrupted data transmission
  • Incompatible or outdated vehicle software
  • Electrical interference
  • Low battery voltage or power supply issues

Common misdiagnoses

  • Faulty GPS module
  • Wiring issues or shorts
  • Faulty engine control module (ECM)
  • Incorrectly configured vehicle settings
  • Software or firmware issues
  • Faulty communication lines or connectors
  • Issues with other sensors (e.g., speed or position sensors)

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring and connectors related to the GPS module for any signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

    Ensure that the pins in the connectors are not bent or corroded

  4. 4. Test the GPS Module

    Functionality Check: If possible, test the GPS module to ensure it is functioning correctly. This may involve using a multimeter to check for proper voltage and ground

  5. 5. Replacement

    If the module is suspected to be faulty, consider replacing it with a known good unit

  6. 6. Check for Software Updates

    ECU Updates: Check if there are any software updates available for the vehicle’s ECU that may address known issues with the GPS module

  7. 7. Reprogramming

    In some cases, reprogramming the ECU may resolve communication issues

  8. 8. Inspect Related Components

    Antenna: Check the GPS antenna for damage or obstructions that may affect signal reception

  9. 9. Other Modules

    Inspect other related modules (like the body control module or navigation system) for faults that could affect GPS data transmission

  10. 10. Clear Codes and Test Drive

    After performing inspections and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  11. 11. Check for Environmental Factors

    Signal Interference: Ensure that there are no environmental factors (like heavy foliage, tall buildings, or other electronic devices) that could interfere with GPS signal reception

  12. 12. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the specific make and model of the vehicle that may provide additional guidance or known fixes for the U046B code

  13. 13. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership that has experience with your vehicle’s make and model. By following these steps, you should be able to identify the root cause of the U046B code and take appropriate action to resolve the issue