The P2447: Secondary Air Injection System Pump Stuck Off Bank 2 refers to an issue where the secondary air injection pump for Bank 2 is stuck in the “off” position. This prevents the necessary air injection into the exhaust, which is crucial during certain phases to reduce emissions, particularly during cold starts. Potential causes include a faulty pump or issues with the electrical or control circuits that manage pump operation.
P2447 – Quick Overview
Code | Information |
---|---|
Meaning | P2447: Secondary Air Injection System Pump Stuck Off Bank 2 |
Is it serious? | Moderate – a pump stuck off can lead to inefficient emissions control, resulting in higher emissions, especially during cold starts. |
Possible causes | – Pump stuck in the off position – Faulty pump – Electrical or control circuit issues |
How to diagnose? | – Inspect and test the secondary air injection pump – Check electrical connections and control circuits – Replace faulty pump if needed |
P2447 Meaning
The P2447: Secondary Air Injection System Pump Stuck Off Bank 2 code indicates that the air injection pump in Bank 2 is not operating when commanded, preventing fresh air from being injected into the exhaust stream during cold starts. This can increase exhaust emissions and may be due to a malfunctioning pump, faulty electrical connections, or control circuit issues that prevent the pump from receiving the signal to activate.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to identify any additional related fault codes. Other codes may provide context and help in diagnosing broader system issues. | OBD-II Scanner |
Inspect the Secondary Air Injection Pump | Visually inspect the secondary air injection pump for Bank 2 for signs of physical damage, corrosion, or wear that could be preventing it from functioning properly. | Flashlight, Safety Gloves |
Test Pump Functionality | Use a diagnostic tool to command the pump on and off. Verify if the pump responds to these commands appropriately; ensure it activates when expected. | Diagnostic Tool |
Check Electrical Connections | Inspect the wiring and connectors connected to the pump for any signs of damage, loose connections, or corrosion. Poor connections can prevent the pump from receiving power. | Flashlight, Multimeter |
Test the Control Circuit | Measure voltage at the control circuit and verify continuity. Ensure that the control module is sending the correct signal to activate the pump during the appropriate conditions. | Multimeter, Wiring Diagram |
Replace the Pump if Faulty | If the pump itself is found to be defective, replace it to restore functionality. This will allow proper air injection during the necessary phases. | Replacement Pump, Wrench Set |
Clear the Code and Test Drive | After completing the repair, clear the P2447 code using an OBD-II scanner. Take the vehicle for a test drive to ensure the secondary air injection system operates correctly. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | Re-scan the vehicle to confirm that the P2447 code has not returned. If the code reappears, further diagnostics may be required to determine the cause of continued malfunction. | OBD-II Scanner |

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