WOMS
P code powertrain Medium severity

P1416 Port Air Circuit Malfunction/ (AIR) System Bank 2

The OBD2 code P1416 indicates a malfunction in the Port Air Injection (AIR) system for Bank 2, which is responsible for introducing air into the exhaust system to help reduce emissions

Definition

The OBD2 code P1416 indicates a malfunction in the Port Air Injection (AIR) system for Bank 2, which is responsible for introducing air into the exhaust system to help reduce emissions

Common causes

  • Faulty air injection pump
  • Blocked or clogged air injection system
  • Leaking or damaged hoses
  • Faulty check valve
  • Electrical issues (wiring or connectors)
  • Failed air injection relay
  • Malfunctioning engine control module (ECM)

Common misdiagnoses

  • Faulty air injection pump
  • Blocked or restricted air passages
  • Faulty check valve
  • Wiring or connector issues
  • Faulty engine control module (ECM)
  • Vacuum leaks
  • Faulty oxygen sensors
  • Exhaust leaks

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 multiple issues

  2. 2. Inspect the Air Injection System Components

    Air Pump: Check the air injection pump for proper operation. Listen for unusual noises or lack of operation

  3. 3. Hoses and Connections

    Inspect all hoses and connections for cracks, leaks, or disconnections. Ensure that they are securely attached

  4. 4. Check Valves

    Examine the check valves for proper operation. They should not be stuck open or closed

  5. 5. Test the Air Pump Operation

    Manually activate the air pump (if possible) to see if it operates correctly. This may require a scan tool that can command the pump to run

  6. 6. Inspect Electrical Connections

    Check the wiring and connectors related to the air injection system for corrosion, damage, or loose connections. Pay special attention to the connectors at the air pump and any related sensors

  7. 7. Check for Vacuum Leaks

    Inspect for any vacuum leaks in the air injection system. A vacuum leak can cause improper operation of the system

  8. 8. Examine the Control Module

    If the air pump and components are functioning correctly, the issue may lie with the engine control module (ECM) or the control circuit. Check for any software updates or known issues with the ECM

  9. 9. Test the Air Injection Relay

    If the system uses a relay to control the air pump, test the relay for proper operation. Replace it if it is faulty

  10. 10. Check for Blockages

    Inspect the air injection system for any blockages that could prevent air from being injected into the exhaust system

  11. 11. Perform a Visual Inspection

    Look for any signs of damage or wear in the air injection system components, including the air pump, hoses, and valves

  12. 12. 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.1

  13. 13. Consult Repair Manual

    If the issue persists, consult the vehicle’s repair manual for specific diagnostic procedures related to the air injection system for your make and model.1

  14. 14. Seek Professional Help

    If you are unable to diagnose or fix the issue, consider seeking help from a professional mechanic who has experience with the specific vehicle and its emissions systems. By following these steps, you should be able to identify and resolve the issue related to the P1416 code