What is OBD-II Code P2444 – AIR System Pump Stuck On Bank 1

When the Check Engine Light (CEL) comes on, it is a cause for concern for most car owners. A warning light on the dashboard signals that something is not right with the vehicle. In modern cars, the On-Board Diagnostics system (OBD) provides a standardized way to identify the problem. OBD-II Code P2444 – AIR System Pump Stuck On Bank 1 is one such diagnostic code that tells us something is wrong with the car’s air injection system.

In this article, we will explain what OBD-II Code P2444 means, what causes it, symptoms that indicate this error, diagnostic procedures to identify the underlying problem, and how to repair the issue. As a mechanic, we will provide practical advice on how to resolve this issue, helping you save time and money in the long run.

What is OBD-II Code P2444 – AIR System Pump Stuck On Bank 1?

The OBD-II Code P2444 indicates a problem with the Secondary Air Injection (AIR) System. The AIR system pumps fresh air into the exhaust system to burn off any remaining fuel. This process helps to reduce harmful emissions and improve engine performance. The engine control module (ECM) monitors the AIR system to ensure that it is functioning correctly. If the ECM detects a malfunction, it logs the P2444 code.

Bank 1 refers to the side of the engine where the malfunction is occurring. The engine has two banks, Bank 1 and Bank 2. The bank number depends on the engine type and configuration. In a V6 or V8 engine, Bank 1 is typically the side of the engine with Cylinder 1. In a four-cylinder engine, Bank 1 is usually the side where Cylinder 1 is located.

What Causes P2444 Code?

There can be many causes of a P2444 code. The most common include:

1. Pump Failure: The AIR pump may fail due to a broken impeller, a seized motor, or a damaged hose. This failure can cause the pump to stick, leading to insufficient airflow.

2. Wiring Issues: Damaged wiring or corroded connectors can result in an electrical contact problem that causes the AIR pump to malfunction.

3. Clogged Air Injection System: Dirt or debris can enter the air injection system through a faulty check valve or filter, causing blockages.

4. Malfunctioning Check Valve: The check valve helps to prevent exhaust gasses from flowing back into the air injection system. A faulty check valve can cause airflow issues, resulting in a P2444 code.

Symptoms of P2444 Code

When the P2444 code appears, the following symptoms may indicate an issue with the air injection system:

1. The CEL illuminates.

2. The engine may perform poorly.

3. Rough idling or engine stumbling.

4. Reduced power output.

Diagnostic Procedures

A professional mechanic will have the necessary tools and equipment to perform the diagnostic procedures to identify the problems and take the necessary corrective steps.

First, the mechanic will connect an OBD-II code reader to the vehicle’s diagnostic port to retrieve codes and data. A thorough inspection of the air injection system and its components will then be carried out. The mechanic will conduct a visual inspection to check for any signs of wear, damage, or leaks. A pressure test will be performed to identify any blockages in the system.

If the above steps do not identify the problem, the mechanic will check the electrical connections to ensure there are no wiring issues, check the pump for proper operation, and check for any blockages in the system.

How to Repair P2444 Code

Once the underlying issue has been diagnosed, the mechanic will perform the necessary repair. The following are possible repairs:

1. Replacing the AIR pump if it has failed: If the pump has a worn out impeller or a seized motor, a replacement is necessary.

2. Cleaning Air Injection System: If a clogged air injection system is the root cause, cleaning the system will correct the issue.

3. Replacing Failed Check Valve: A failed check valve must be replaced to restore proper airflow.

4. Repairing or Replacing Wiring: Any damaged wiring or corroded connectors must be repaired or replaced.

Frequently Asked Questions

1. What happens if the P2444 code is ignored?

Ignoring the P2444 code can lead to reduced performance and damage to the engine. Over time, more codes may appear, making repairs more costly.

2. Can I drive with the P2444 code, or should I stop driving?

You can still drive the vehicle, but it’s best to take it to a mechanic for repair as soon as possible, as the code indicates a problem with the air injection system, which can lead to engine damage.

3. Can I clear the P2444 code and continue driving?

Clearing the code will turn off the warning light, but the underlying problem will remain, affecting engine performance, power output, and fuel efficiency. It’s best to have an experienced mechanic identify and fix the underlying issue.

4. How much does it cost to fix P2444 code?

The cost of repair varies depending on the severity of the problem and the make and model of the vehicle. On average, repairs can cost between $200 and $1,500. Labor fees, parts, and local taxes will also affect the cost of repairs.

5. What causes P2444 code?

The P2444 code can be caused by various issues, including a faulty AIR pump, clogged air injection system, malfunctioning check valve, wiring problems, or damaged connectors. A mechanic will have to diagnose the root cause of the problem to correct it.


The OBD-II Code P2444 signifies a malfunction with the air injection system used in modern cars. When this code appears, it is essential to take the vehicle to a mechanic for diagnosis and repair. Otherwise, driving the car with a P2444 code could lead to more severe engine problems and costly repairs. After diagnosing the problem, a mechanic will carry out the necessary repairs, which may range from replacing a faulty AIR pump to repairing damaged wiring.

It’s important to note that ignoring the P2444 code can lead to complications, reduced performance, and potential engine damage. Therefore, if you detect a CEL, take your car to the mechanic for prompt diagnosis and repair.

Additional Resources:

1. “How to Diagnose a P2444 Code” – AutoZone.com

2. “Secondary Air Injection System Basics” – LiveAbout.com

3. “What is the Secondary Air Injection System?” – YourMechanic.com

4. “Understanding OBD-II Codes” – CarMD.com

5. “How to Maintain Your Car’s Air Injection System” – TheSpruce.com.

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