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P247F Exhaust Gas Temperature Out of Range Bank 2 Sensor 4

The OBD2 code P247F indicates that the exhaust gas temperature (EGT) for Bank 2, Sensor 4 is outside the expected range, suggesting a potential issue with the sensor or the exhaust system

Definition

The OBD2 code P247F indicates that the exhaust gas temperature (EGT) for Bank 2, Sensor 4 is outside the expected range, suggesting a potential issue with the sensor or the exhaust system

Common causes

  • Faulty exhaust gas temperature sensor
  • Wiring issues or damaged connectors
  • Exhaust leaks
  • Engine control module (ECM) issues
  • Incorrect sensor calibration
  • High exhaust temperatures due to engine problems
  • Poor electrical connections

Common misdiagnoses

  • Faulty Exhaust Gas Temperature Sensor
  • Faulty Engine Control Module (ECM)
  • Exhaust Leaks
  • Wiring or Connector Issues
  • Faulty Turbocharger or Turbocharger Wastegate
  • Incorrectly Installed or Damaged Catalytic Converter
  • Faulty Oxygen Sensors
  • Fuel System Issues
  • Air Intake System Problems
  • Engine Overheating Issues

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

    Visual Inspection: Check the wiring and connectors for the EGT sensor. Look for signs of damage, corrosion, or loose connections

  3. 3. Sensor Condition

    If the sensor is physically damaged or has excessive carbon buildup, it may need to be replaced

  4. 4. Test the EGT Sensor

    Resistance Check: Use a multimeter to measure the resistance of the EGT sensor. Compare the readings to the manufacturer's specifications

  5. 5. Voltage Check

    With the engine running, check the voltage output of the sensor. It should vary with temperature. If it’s not within the expected range, the sensor may be faulty

  6. 6. Inspect the Exhaust System

    Leaks: Check for any exhaust leaks in the system, especially around the area of the EGT sensor. Leaks can affect temperature readings

  7. 7. Blockages

    Ensure there are no blockages in the exhaust system that could cause abnormal temperature readings

  8. 8. Check Engine Coolant Temperature

    Ensure that the engine is reaching the proper operating temperature. A malfunctioning thermostat can cause the engine to run cooler than normal, affecting EGT readings

  9. 9. Review Engine Performance

    Look for any signs of poor engine performance, such as misfires, rough idling, or decreased power. These issues can affect exhaust temperatures

  10. 10. Inspect the Engine Control Module (ECM)

    Check for any software updates or recalls related to the ECM. Sometimes, manufacturers release updates to address known issues

  11. 11. Clear Codes and Test Drive

    After performing any repairs or replacements, clear the trouble codes and take the vehicle for a test drive to see if the code returns

  12. 12. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the P247F code for your specific make and model. Manufacturers may have specific recommendations or known issues

  13. 13. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose the problem accurately. By following these steps, you should be able to identify the cause of the P247F code and take appropriate action to resolve it