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P code powertrain Medium severity

P2087 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2

The OBD2 code P2087 indicates an intermittent issue with the exhaust gas temperature sensor circuit for Bank 2, Sensor 2, which measures the temperature of the exhaust gases to help manage emissions and engine...

Definition

The OBD2 code P2087 indicates an intermittent issue with the exhaust gas temperature sensor circuit for Bank 2, Sensor 2, which measures the temperature of the exhaust gases to help manage emissions and engine performance

Common causes

  • Faulty exhaust gas temperature sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Short circuit in the sensor circuit
  • Open circuit in the sensor circuit
  • Corrosion at the sensor connector
  • Faulty engine control module (ECM)

Common misdiagnoses

  • Faulty exhaust gas temperature sensor
  • Wiring issues or short circuits
  • Faulty engine control module (ECM)
  • Exhaust leaks
  • Incorrectly diagnosed catalytic converter issues
  • Misinterpretation of related codes
  • Faulty connectors or terminals
  • Issues with the turbocharger (if applicable)

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues present

  2. 2. Inspect the EGT Sensor

    Locate the EGT sensor for Bank 2, Sensor 2. Inspect the sensor for any visible damage, corrosion, or loose connections

  3. 3. Ensure that the sensor is properly mounted and that there are no signs of physical damage

  4. 4. Check Wiring and Connectors

    Inspect the wiring harness and connectors leading to the EGT sensor. Look for frayed wires, broken connectors, or signs of wear

  5. 5. Ensure that all connections are secure and free from corrosion

  6. 6. Test the EGT Sensor

    Use a multimeter to test the resistance of the EGT sensor. Compare the readings to the manufacturer's specifications

  7. 7. If the sensor is out of specification, it may need to be replaced

  8. 8. Check for Short Circuits or Open Circuits

    With the multimeter, check for continuity in the wiring to ensure there are no open circuits

  9. 9. Check for any short circuits to ground or to other wires in the harness

  10. 10. Inspect the Exhaust System

    Check the exhaust system for any leaks or damage that could affect the EGT sensor's readings

  11. 11. Ensure that the sensor is properly positioned in the exhaust flow

  12. 12. Clear Codes and Test Drive

    After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner

  13. 13. Take the vehicle for a test drive to see if the code returns. Monitor the EGT sensor readings if possible

  14. 14. Check Engine Control Module (ECM)

    If the problem persists, there may be an issue with the ECM itself. Check for software updates or reprogramming if necessary

  15. 15. In rare cases, the ECM may need to be replaced

  16. 16. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the EGT sensor or the specific vehicle model. Manufacturers may have issued guidance on common issues and fixes

  17. 17. Seek Professional Help

    If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or technician who has experience with OBD-II diagnostics. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P2087 code