P2441Secondary Air Injection

Secondary Air Injection System Switching Valve Stuck Closed (Bank 1)

The control module has determined that the secondary air injection switching valve on bank 1 is stuck closed. The valve should open during cold start to route air into the exhaust. Stuck closed, the secondary air system cannot function.

🚗 Yes, in most cases. This emissions fault mainly affects cold-start emissions. Repair it to pass inspection.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Switching valve stuck closed$100-$350

40%

Carbon or a failed solenoid holds the valve closed.

#2Vacuum or control fault$50-$250

25%

Missing vacuum or an electrical fault prevents the valve from opening.

#3Carbon buildup$100-$300

20%

Soot seizes the valve in the closed position.

#4Failed air pump$200-$500

15%

A dead pump produces no flow, mimicking a closed valve.

🩺 Common Symptoms

Check engine light is on
Rough cold-start idle
Higher emissions at cold start
Air injection monitor does not complete

💰 Repair Cost: DIY vs Shop

DIY Cost

$100-$350

Shop Cost

$200-$550

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P2441

1Verify the air pump runs and produces flow at cold start.

2Check the vacuum or electrical control to the switching valve.

3Command the valve open with a scan tool and confirm operation.

4Replace the valve if it stays closed, then clear and retest.

❓ Frequently Asked Questions

What happens if the valve is stuck closed?

No fresh air reaches the exhaust at cold start, so the catalyst warms more slowly and emissions rise.

Can I drive with it?

Yes, in most cases. It affects cold-start emissions rather than daily drivability.

Is the air pump involved?

It can be. Confirm the pump runs before condemning the valve, since a dead pump looks similar.

🔗 Related Codes

P2440P2442P2431P0410P0491