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P code powertrain Medium severity

P2220 Barometric Pressure Sensor Circuit Range/Performance Problem

The OBD2 code P2220 indicates a problem with the barometric pressure sensor circuit, specifically that the sensor is providing readings that are outside the expected range or performance parameters

Definition

The OBD2 code P2220 indicates a problem with the barometric pressure sensor circuit, specifically that the sensor is providing readings that are outside the expected range or performance parameters

Common causes

  • Faulty barometric pressure sensor
  • Damaged wiring or connectors in the sensor circuit
  • Poor electrical connections
  • Vacuum leaks in the intake system
  • Faulty engine control module (ECM)
  • Corroded or dirty sensor terminals
  • Issues with the vehicle's power supply or ground connections

Common misdiagnoses

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

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 help identify if there are related issues

  2. 2. Inspect the Barometric Pressure Sensor

    Locate the barometric pressure sensor (often integrated into the manifold absolute pressure (MAP) sensor)

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

  4. 4. Test the Sensor Voltage

    With the ignition on (engine off), use a multimeter to check the voltage at the sensor connector. Compare the readings to the manufacturer's specifications

  5. 5. If the voltage is outside the specified range, the sensor may be faulty

  6. 6. Check Ground Connections

    Ensure that the ground connections for the barometric pressure sensor are clean and secure. A poor ground can lead to incorrect readings

  7. 7. Inspect Wiring and Connectors

    Look for damaged, frayed, or shorted wires in the circuit leading to the barometric pressure sensor

  8. 8. Check for any signs of moisture or corrosion in the connectors

  9. 9. Test the Sensor Functionality

    If possible, perform a bench test on the barometric pressure sensor to see if it responds correctly to changes in pressure

  10. 10. Alternatively, you can compare the readings from the barometric pressure sensor with a known good sensor or a scan tool that can read live data

  11. 11. Check for Vacuum Leaks

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

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

    If all other components check out, there may be an issue with the ECM itself. Check for software updates or reprogramming if necessary

  13. 13. Clear Codes and Test Drive

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

  14. 14. Consult Repair Manual

    Refer to the vehicle’s service manual for specific testing procedures, specifications, and wiring diagrams related to the barometric pressure sensor.Conclusion If the issue persists after following these troubleshooting steps, it may be advisable to consult a professional mechanic for further diagnosis. They can perform more advanced tests and have access to specialized equipment