WOMS
P code powertrain Medium severity

P2067 Fuel Level Sensor "B" Circuit Low

The OBD2 code P2067 indicates a low voltage or malfunction in the fuel level sensor "B" circuit, which can affect the accuracy of the fuel gauge reading

Definition

The OBD2 code P2067 indicates a low voltage or malfunction in the fuel level sensor "B" circuit, which can affect the accuracy of the fuel gauge reading

Common causes

  • Faulty fuel level sensor
  • Damaged wiring or connectors
  • Short circuit in the fuel level sensor circuit
  • Open circuit in the fuel level sensor circuit
  • Corroded connectors
  • Faulty engine control module (ECM)
  • Poor ground connection

Common misdiagnoses

  • Faulty fuel level sensor
  • Wiring issues or shorts in the circuit
  • Fuel gauge cluster malfunction
  • Fuel pump problems
  • ECM/PCM issues
  • Grounding problems
  • Fuel tank issues (e.g., leaks or damage)

Troubleshooting steps

  1. 1. Check for Additional Codes

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

  2. 2. Inspect the Fuel Level Sensor

    Locate the fuel level sensor "B" (usually found in the fuel tank)

  3. 3. Check for physical damage, corrosion, or loose connections at the sensor

  4. 4. Test the Fuel Level Sensor

    Use a multimeter to measure the resistance of the fuel level sensor. Compare the readings to the manufacturer's specifications

  5. 5. If the resistance is outside the specified range, the sensor may be faulty and need replacement

  6. 6. Check Wiring and Connectors

    Inspect the wiring harness and connectors leading to the fuel level sensor for any signs of damage, fraying, or corrosion

  7. 7. Ensure that all connections are secure and free of dirt or moisture

  8. 8. Test the Circuit

    With the multimeter, check for voltage and ground at the fuel level sensor connector while the ignition is on (but the engine is off)

  9. 9. Ensure that the sensor is receiving the correct voltage and that the ground is solid

  10. 10. Check for Short Circuits or Open Circuits

    Use the multimeter to check for continuity in the wiring between the sensor and the ECM

  11. 11. Look for any short circuits to ground or open circuits that could be causing the low reading

  12. 12. Inspect the Fuel Tank

    If accessible, check the fuel tank for any obstructions or issues that could affect the sensor's operation

  13. 13. Check the Engine Control Module (ECM)

    If all other components check out, there may be an issue with the ECM itself. This is less common but can happen

  14. 14. Consult the vehicle's service manual for specific testing procedures for the ECM

  15. 15. Clear the Codes and Test Drive

    After performing repairs or replacements, clear the trouble codes using the OBD-II scanner

  16. 16. Take the vehicle for a test drive to see if the code returns

  17. 17. Consult a Professional

    If the issue persists after following these steps, it may be best to consult a professional mechanic for further diagnosis.Additional Tips: - Always refer to the vehicle's service manual for specific testing procedures and specifications. - Ensure safety precautions are taken when working with fuel systems, as they can be hazardous. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P2067 code