How to Fix Code P0410: Fixes for Secondary Air Injection System Malfunction

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man removing the car air pump

It can be a very confusing and frustrating experience when your check engine light flashes on your dashboard. The feeling of anxiety increases as you pull out your OBD scanner and see the diagnostic trouble code P0410. Don’t fret, though, as we are here to help you!This blog post will discuss the causes, symptoms, and possible fixes to this pesky error code. Read on!

What is Code P0410?

The code P0410 is an error code that indicates a secondary air injection system malfunction and can cause all sorts of problems for your vehicle. This air injection system helps provide additional air for the combustion process.

When the oxygen sensor detects inaccurate changes in the O2 level of the exhaust while the air injection system is on functional testing, the code P0410 will be triggered.

Symptoms of P0410 Code

The illuminated check engine light is the first sign you will notice when the code P0401 is triggered. You might think it's not serious until you see the few symptoms below:

  • Noisy air injection system pump 
  • The engine may run too rich if excessive O2 is pumped into the exhaust.

Causes of Code P0410

If you are not knowledgeable about this code, you might think that only one problem triggers this issue. However, several things can cause this problem, and some of the most common are:

  • A vacuum leak in the system
  • Clogged air filters or intake manifold
  • Faulty air injection pump
  • Defective Secondary Air Injection (AIR) valve
  • Blown fuse

How to Diagnose Error Code P0410?

Diagnosing the possible causes is the first step in fixing the problem. An OBD scanner can help you with the process. Here's the step-by-step guide in diagnosing the issue. 

Step-by-Step Guide

  1. Using an OBD scanner tool, check if there are any other codes along with P0410 and clear your check engine light.
  2. If other codes come up during the diagnosis, address all the issues before continuing with the P0410 diagnosis.
  3. Using the scanner tool, monitor the o2 sensor in real-time to see if it reacts when the air injection pump is activated. If the sensor is functioning properly, it should drop below 150 millivolts within 3 seconds of pump activation.
  4. If the sensor takes longer to respond than 3 seconds, replace O2 sensors and retests the system.
  5. If the sensor is not the root cause of the issue, check the air injection relay pump if it isn't turning on. If it's not, it indicates a faulty power connection or a failed air injection pump that needs to be repaired.
  6. Finally, verify if the air injection pump reads the correct resistance between power and ground pins using a multimeter. That's the main indicator of a faulty pump control or a failed pump.

How to Fix Code P0410?

After diagnosing the code, you probably have a concrete idea of the problem. If you're not comfortable fixing it, take your car to a certified mechanic and have them do the work for you. But, if you are confident enough to do it yourself, here is the list of possible fixes you can do:

  • Replace the air injection pump and power relay
  • Replace the O2 sensors
  • Replacing the clogged air injection pump

Common Mistakes When Diagnosing the P0410 code

Many of us tend to commit some common mistakes when diagnosing trouble codes. P0410 is not exempted from this. Here are the most common mistakes:

  • Assuming that the code is caused by a problem with the catalytic converter when it's not.
  • Thinking that there's something wrong with the air pump when there might not be.
  • Replacing the air injection system components without verifying the root cause of the code.
  • Not thoroughly inspecting all possible reasons for the code.
  • Replacing air hoses when the problem is the air injection pump 
  • Not verifying if the fuse is not blown before diagnosing other system parts.

P0410 Code FAQs

1. Is the P0410 Code Serious?

If you care about fuel economy and local car emission regulations, you should take this trouble code seriously as it is one step away from a failed emissions test. The air injection pump system's role is to help lower exhaust emissions. If it's faulty, your car will not pass the emissions test, which would mean big trouble for you.

2. Can I drive with a P0410 code?

Yes, you can drive with a P0411 code as long as the vehicle is in a safe condition to do so. However, it's crucial to diagnose and repair the problem as soon as possible.

3. How much does the repair cost?

The cost may vary depending on the specific issue. However, it is a relatively inexpensive and straightforward fix in most cases. The diagnostic will cost around $150 and $20 for repair.

4. Should I use a specific brand of OBD tool?

No, any OBD II scanner tool will work. Just make sure to use live data viewing for a more straightforward diagnosis.

5. Do I need to address the P0401 code immediately?

No, the P0401 code is not an immediate safety issue. However, it's important to address it as soon as possible to avoid potential problems in the future.


If you're experiencing a P0401 code or a Secondary Air Injection System Malfunction, don't panic because there are many possible solutions for these issues that you can do at the comfort of your home. However, if you are not confident enough to do this yourself, we urge you to send your vehicle to a qualified mechanic to avoid further damage.

We hope this article has helped you deal with the P0401 code. If you have any questions, please don’t hesitate to ask in the comments section below. Thanks for reading!