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P code powertrain High severity

P060B Internal Control Module A/D Processing Performance

The OBD2 code P060B indicates a problem with the performance of the internal control module's analog-to-digital (A/D) processing, suggesting that the module is not functioning correctly or is experiencing a fault in its...

Definition

The OBD2 code P060B indicates a problem with the performance of the internal control module's analog-to-digital (A/D) processing, suggesting that the module is not functioning correctly or is experiencing a fault in its processing capabilities

Common causes

  • Faulty Engine Control Module (ECM)
  • Poor electrical connections or wiring issues
  • Corrupted software or firmware in the ECM
  • Sensor malfunctions (e.g., throttle position sensor, mass airflow sensor)
  • Grounding issues
  • Voltage supply problems
  • Faulty A/D (Analog to Digital) converters within the ECM
  • Overheating of the ECM
  • Short circuits or open circuits in the control module circuitry

Common misdiagnoses

  • Faulty Engine Control Module (ECM)
  • Bad wiring or connectors
  • Sensor malfunctions (e.g., throttle position sensor, mass airflow sensor)
  • Issues with the powertrain control module (PCM)
  • Software or firmware issues
  • Grounding problems
  • Faulty fuel injectors
  • Vacuum leaks
  • Ignition system problems
  • Transmission control module issues

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 pinpoint the issue

  2. 2. Inspect Wiring and Connectors

    Examine the wiring and connectors related to the ECM/PCM for any signs of damage, corrosion, or loose connections. Pay special attention to the A/D input circuits

  3. 3. Clear Codes and Test Drive

    Clear the trouble codes using the scanner and take the vehicle for a test drive to see if the code returns. This can help determine if the issue is intermittent

  4. 4. Check Battery Voltage

    Ensure that the vehicle's battery is in good condition and that the voltage is within the normal range (typically 12.4 to 12.6 volts when the engine is off). Low voltage can cause erratic behavior in the ECM

  5. 5. Inspect Ground Connections

    Verify that all ground connections for the ECM/PCM are secure and free of corrosion. Poor grounding can lead to performance issues

  6. 6. Test the ECM/PCM

    If the above steps do not resolve the issue, the ECM/PCM may need to be tested. This can involve checking the module's inputs and outputs with a multimeter or oscilloscope

  7. 7. Check Sensor Inputs

    Inspect the sensors that provide input to the ECM/PCM, such as the throttle position sensor, mass airflow sensor, and others. Ensure they are functioning correctly and providing accurate readings

  8. 8. Update Software/Firmware

    Check if there are any software updates available for the ECM/PCM. Sometimes, manufacturers release updates to fix known issues

  9. 9. Perform a Hard Reset

    Disconnect the battery for a few minutes to reset the ECM/PCM. Reconnect and see if the code reappears

  10. 10. 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 how to address this code. 1

  11. 11. Replace the ECM/PCM

    If all else fails and the module is determined to be faulty, replacing the ECM/PCM may be necessary. Always remember to follow safety precautions when working on a vehicle's electrical system, and if you're unsure about any step, consider consulting a professional mechanic