P2441 Code: Secondary Air Injection System Switching Valve Stuck Closed Bank 1

The secondary air system is used so that emissions can be reduced during startup, as the catalytic converter is still being warmed up during this time.  If your vehicle’s secondary air injection system has problems with the switching valve, then the P2441 code, or other related trouble codes, can be stored.

What Does the P2441 Code Mean?

Diagnostic trouble code (DTC) P2441 code means “Secondary Air Injection System Switching Valve Stuck Closed Bank 1.” The powertrain control module (PCM) triggers the P2441 code when it detects problems with the secondary air injection system’s switching valve. This valve is responsible for allowing ambient air to enter the exhaust manifold or elsewhere in the exhaust system, which helps the catalytic converter heat up during a cold start.

P2441 on Some Toyota Vehicles

The code appears in a 2007 Toyota Tundra 5.4L because of the following conditions:

• Failed VSV (air switching valve)
• Blocked or disconnected air injection hose
• Damaged air pressure sensor connector (check pins for damage, moisture)
• Open or shorted air pressure sensor signal circuit
• Failed air switching valve
• Open or shorted VSV (Air Switching Valve) control circuit
• Failed air pressure sensor
• Failed ECM

Note: The definition of the P2441 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2441 Code?

The issues that trigger the P2441 code are commonly caused by the following issues:

• Failed secondary air pump control valve
• Clogged or severed vacuum hose
• Failed secondary air pump
• Circuit issues, such as a damaged wire or failed relay
• A PCM issue

What are the Common Symptoms of the P2441 Code?

Here are the common symptoms of the P2441 code:

• Illuminated check engine light
• Noise coming from the air injection system
• Vehicle stuck in limp mode

How to Diagnose the P2441 Code

While the P2441 code indicates that there’s an issue with the secondary air injection system and its components, there’s a chance that it isn’t the culprit. You need to properly identify the cause to be able to fix this DTC. This means you might need to visually inspect the concerned components and their wiring, which can be difficult if you’re not familiar with their layout. Doing this job properly might require special tools and knowledge. If you aren’t confident when it comes to doing DIY repairs, then we recommend consulting a trusted mechanic to properly diagnose the issue.

The video below might give you a better idea of the diagnostic process:

How to Fix the P2441 Code

Given the wide range of issues that can set the P2241 code, the first thing you should do is to check if there are other trouble codes that have been triggered. You should disregard the codes that refer to issues with the traction control and cruise control, since these codes can be triggered by the same issues causing the P2241 code.  That said, you should resolve other codes that concern all other components, such as the engine and transmission. If you attempt to fix the P2441 code without attempting to resolve other codes, you misdiagnose the issue and waste time fixing a functioning part.

This code is frequently triggered by faulty or malfunctioning vacuum check valves or air intake valves, so you’ll need to locate and identify all relevant vacuum check valves. But first, you need to check the fuses or relays of parts like the secondary air combination valve fuse and replace them if they’re faulty. Afterward, inspect the vacuum check valves to see if they’re faulty and replace them if necessary.

Consult your owner’s manual to find out how to locate and recognize these components. The air combination valve fuse is typically located in the fuse box, while the air intake valves are typically located underneath or behind the air intake manifold.

First, remove the air intake manifold. This process will likely involve removing several bolts and clips and might involve moving wires. Once you’ve removed the intake manifold, the throttle body and the air intake valves will be exposed.

You’ll need to remove the air intake valves to be able to diagnose them. This process can be complicated and we suggest you look at online repair resources that are specific to your vehicle. Be on the lookout for signs of moisture inside the air intake valves, as this can cause corrosion and failure. You’ll need to replace the part if it’s faulty to resolve the issue.

After doing this, you’ll need to reassemble everything. You’ll need to install a new intake manifold gasket since this is typically replaced after an engine repair like this one.

Just keep in mind that this issue can also be caused by problems with the PCM, wiring connections to the air injection system, and vacuum lines. Diagnosing and fixing issues concerning these parts can involve more steps. The process will vary depending on your specific vehicle model, so you should check your manual or look for online resources to help you. If you don’t have much experience troubleshooting DTCs, we recommend leaving the task to a trusted mechanic.