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U code network High severity

U1062 Lost Communication with Vehicle Control Module

The OBD2 code U1062 indicates a loss of communication with the vehicle control module, meaning that the module is not responding or is unable to communicate with other modules in the vehicle's network

Definition

The OBD2 code U1062 indicates a loss of communication with the vehicle control module, meaning that the module is not responding or is unable to communicate with other modules in the vehicle's network

Common causes

  • Faulty Vehicle Control Module (VCM)
  • Damaged wiring or connectors
  • Poor ground connections
  • Corroded terminals
  • Faulty communication network (CAN bus issues)
  • Malfunctioning sensors
  • Software or firmware issues
  • Battery or power supply problems

Common misdiagnoses

  • Faulty Vehicle Control Module (VCM)
  • Wiring issues or damaged connectors
  • Faulty power supply or ground connections
  • Malfunctioning sensors
  • Issues with the Engine Control Module (ECM)
  • Problems with the Transmission Control Module (TCM)
  • Faulty communication lines (CAN bus issues)
  • Software or firmware issues in the control modules
  • Battery or charging system problems
  • Corroded or loose terminals

Troubleshooting steps

  1. 1. Check for Other Codes

    Use an OBD-II scanner to check for any additional trouble codes. Other codes may provide more context or indicate which module is having communication issues

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring and connectors related to the control module that is reporting the U1062 code. Look for signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

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

  4. 4. Check Power and Ground

    Verify that the control module has the proper power supply and ground. Use a multimeter to check voltage at the module's power and ground pins

  5. 5. If there is no power or ground, trace the wiring back to the fuse box or battery to find the issue

  6. 6. Inspect the Control Module

    If the wiring and connections are good, the control module itself may be faulty. Check for any signs of physical damage or water intrusion

  7. 7. If possible, test the module in another vehicle or replace it with a known good module to see if the problem persists

  8. 8. Check for Communication Issues

    Use a scan tool to check if other modules in the vehicle are communicating properly. If other modules are also not communicating, the issue may be with the vehicle's communication network (CAN bus)

  9. 9. Inspect the CAN bus wiring for shorts, opens, or damage

  10. 10. Reset the Codes

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

  11. 11. Check for Software Updates

    Sometimes, a software update for the control module can resolve communication issues. Check with the vehicle manufacturer for any available updates

  12. 12. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to U1062

  13. 13. Professional Diagnosis

    If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership for further diagnosis. They may have specialized tools and knowledge to pinpoint the issue.Conclusion Troubleshooting a U1062 code can involve a combination of checking wiring, connectors, power, and the control module itself. Following these steps systematically can help identify and resolve the communication issue effectively