WOMS
P code powertrain Medium severity

P222E Barometric Pressure Sensor "B" Circuit Intermittent/Erratic

The OBD2 code P222E indicates that there is an intermittent or erratic issue with the Barometric Pressure Sensor "B" circuit, which may affect the vehicle's engine performance and fuel management system

Definition

The OBD2 code P222E indicates that there is an intermittent or erratic issue with the Barometric Pressure Sensor "B" circuit, which may affect the vehicle's engine performance and fuel management system

Common causes

  • Faulty barometric pressure sensor
  • Poor electrical connections or wiring issues
  • Corroded or damaged connectors
  • Vacuum leaks in the intake system
  • Faulty engine control module (ECM)
  • Intermittent short circuits
  • Grounding issues
  • Software glitches in the ECM
  • Environmental factors (moisture, temperature extremes) affecting the sensor

Common misdiagnoses

  • Faulty Barometric Pressure Sensor
  • Wiring Issues or Short Circuits
  • Faulty Engine Control Module (ECM)
  • Vacuum Leaks
  • Faulty Mass Air Flow (MAF) Sensor
  • Faulty Intake Air Temperature (IAT) Sensor
  • Fuel Pressure Issues
  • Exhaust Gas Recirculation (EGR) System Problems
  • Throttle Position Sensor (TPS) Issues
  • Air Filter Restrictions

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 affecting the system

  2. 2. Inspect the Barometric Pressure Sensor

    Locate the Barometric Pressure Sensor "B" (often found in the intake manifold or near the air filter)

  3. 3. Check for physical damage, corrosion, or loose connections at the sensor and its wiring harness

  4. 4. Examine Wiring and Connectors

    Inspect the wiring harness for any signs of wear, fraying, or damage

  5. 5. Ensure that all connectors are secure and free of corrosion or dirt

  6. 6. Look for any signs of short circuits or open circuits in the wiring

  7. 7. Test the Barometric Pressure Sensor

    Use a multimeter to test the sensor's resistance and voltage output according to the manufacturer's specifications

  8. 8. Compare the readings to the expected values in the service manual. If the readings are out of range, the sensor may need to be replaced

  9. 9. Check for Vacuum Leaks

    Inspect the intake system for any vacuum leaks that could affect the barometric pressure readings

  10. 10. Use a smoke machine or spray soapy water around the intake manifold and vacuum lines to identify leaks

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

    Ensure that the ECM is functioning properly and that there are no software issues

  12. 12. Check for any updates or recalls related to the ECM that may address known issues

  13. 13. Clear Codes and Test Drive

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

  14. 14. Take the vehicle for a test drive to see if the code reappears. Monitor the performance of the vehicle and the readings from the barometric pressure sensor

  15. 15. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the P222E code for your specific make and model. Manufacturers may have issued guidance on common issues and fixes

  16. 16. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or technician who has experience with your vehicle make and model.Conclusion By following these troubleshooting steps, you can systematically identify and resolve the issue related to the P222E code. Always refer to the vehicle's service manual for specific diagnostic procedures and specifications