WOMS
P code powertrain Medium severity

P00AE Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 2

The OBD2 code P00AE indicates that there is an intermittent or erratic signal from the Intake Air Temperature Sensor 1 on Bank 2, which may affect engine performance and fuel efficiency

Definition

The OBD2 code P00AE indicates that there is an intermittent or erratic signal from the Intake Air Temperature Sensor 1 on Bank 2, which may affect engine performance and fuel efficiency

Common causes

  • Faulty intake air temperature sensor
  • Poor electrical connections or wiring issues
  • Short circuit or open circuit in the sensor circuit
  • Corroded or damaged connectors
  • Faulty engine control module (ECM)
  • Vacuum leaks
  • Contaminated sensor
  • Temperature sensor calibration issues

Common misdiagnoses

  • Faulty intake air temperature sensor
  • Wiring issues or damaged connectors
  • Faulty engine control module (ECM)
  • Vacuum leaks
  • Faulty mass air flow (MAF) sensor
  • Air filter blockage
  • Faulty coolant temperature sensor
  • Exhaust gas recirculation (EGR) system 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 affecting the IAT sensor

  2. 2. Visual Inspection

    Wiring and Connectors: Inspect the wiring and connectors leading to the IAT sensor for any signs of damage, corrosion, or loose connections. Pay special attention to the condition of the harness and connectors

  3. 3. Sensor Condition

    Check the IAT sensor itself for any physical damage or contamination

  4. 4. Test the IAT Sensor

    Resistance Check: Measure the resistance of the IAT sensor at various temperatures to ensure it is within the manufacturer’s specifications. The resistance should change with temperature

  5. 5. Voltage Check

    With the ignition on (engine off), check the voltage at the sensor connector. Compare the readings to the specifications in the vehicle’s service manual

  6. 6. Check for Ground Issues

    Ensure that the IAT sensor has a good ground connection. A poor ground can lead to erratic sensor readings

  7. 7. Inspect the Intake Air Duct

    Check the intake air duct for any leaks or obstructions that could affect the air temperature readings. Ensure that the ducting is properly connected and sealed

  8. 8. Scan Data Monitoring

    Use a scan tool to monitor the IAT sensor readings while the engine is running. Look for any erratic or inconsistent readings that could indicate a problem

  9. 9. Check Engine Coolant Temperature (ECT) Sensor

    Sometimes, issues with the ECT sensor can affect the IAT readings. Ensure that the ECT sensor is functioning correctly

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

    If all other components check out, there may be an issue with the ECM itself. Check for any software updates or known issues related to the ECM

  11. 11. Clear Codes and Test Drive

    After performing the checks and repairs, 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 IAT sensor or the specific vehicle model, as manufacturers may have issued guidance on common issues.1

  13. 13. Professional Diagnosis

    If the problem persists after all these steps, consider seeking help from a professional mechanic or technician who has access to advanced diagnostic tools. By following these steps, you should be able to identify the cause of the P00AE code and take appropriate action to resolve the issue