WOMS
U code network Medium severity

U0127 Lost Communication With Tire Pressure Monitor Module

The OBD2 code U0127 indicates that there is a loss of communication between the vehicle's control module and the Tire Pressure Monitor Module (TPMS), which may affect the monitoring of tire pressure

Definition

The OBD2 code U0127 indicates that there is a loss of communication between the vehicle's control module and the Tire Pressure Monitor Module (TPMS), which may affect the monitoring of tire pressure

Common causes

  • Faulty Tire Pressure Monitor Module (TPMS)
  • Damaged wiring or connectors
  • Low battery voltage
  • Faulty vehicle communication network (CAN bus)
  • Interference from aftermarket devices
  • Corroded connectors
  • Software issues or updates needed
  • Tire pressure sensor failure

Common misdiagnoses

  • Faulty Tire Pressure Monitor Module
  • Wiring issues or damaged connectors
  • Faulty Engine Control Module (ECM)
  • Incorrect tire pressure readings
  • Malfunctioning ABS module
  • Issues with the vehicle's body control module (BCM)
  • Problems with the vehicle's diagnostic system or scanner
  • Low battery voltage or electrical issues

Troubleshooting steps

  1. 1. Check for Other Codes

    Before focusing solely on U0127, check for any other related trouble codes. There may be additional codes that can provide more context for the issue

  2. 2. Inspect the TPMS Module

    Locate the TPMS module in your vehicle (usually found near the spare tire or under the dashboard) and visually inspect it for any signs of damage, corrosion, or loose connections

  3. 3. Check Wiring and Connectors

    Examine the wiring harness and connectors leading to the TPMS module. Look for frayed wires, broken connectors, or any signs of wear that could interrupt communication

  4. 4. Test the TPMS Module

    If possible, use a scan tool to check if the TPMS module is functioning correctly. Some scan tools can communicate directly with the TPMS module to verify its status

  5. 5. Inspect the Fuses

    Check the vehicle’s fuse box for any blown fuses related to the TPMS or communication systems. Replace any blown fuses as necessary

  6. 6. Battery Voltage

    Ensure that the vehicle's battery is in good condition and fully charged. Low voltage can cause communication issues with various modules

  7. 7. Relearn TPMS Sensors

    If the TPMS sensors have been replaced or the tires have been rotated, you may need to perform a relearn procedure to ensure the TPMS module recognizes the sensors

  8. 8. Check for Interference

    Sometimes, aftermarket devices or modifications can interfere with the communication between modules. Ensure that no such devices are causing the issue

  9. 9. Scan Tool Communication

    Use a professional-grade scan tool to check if you can communicate with the TPMS module. If you can communicate with other modules but not the TPMS, it may indicate a problem with the TPMS module itself

  10. 10. Software Updates

    Check if there are any software updates available for the vehicle’s ECU or TPMS module. Sometimes, manufacturers release updates to fix communication issues. 1

  11. 11. Replace the TPMS Module

    If all other steps fail and the TPMS module is confirmed to be non-functional, consider replacing the module. 1

  12. 12. Professional Diagnosis

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or dealership for further diagnosis. By following these steps, you should be able to identify and potentially resolve the issue related to the U0127 code