P2449 Fault Code

Secondary Air Injection System High Air Flow Bank 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2449 fault code indicates an issue with the secondary air injection system, specifically signifying that there is a high air flow detected in Bank 2. This system is designed to reduce emissions by introducing fresh air into the exhaust stream during cold starts. When high air flow is detected, it suggests that there may be a malfunction within the system that could lead to excessive emissions and potential damage if not addressed.

What are the symptoms of the P2449 code?

Vehicles with a P2449 code may exhibit various symptoms such as:

• Illuminated check engine light
• Failed emissions test
• Poor engine performance or rough idling
• Increased fuel consumption
• Excessive exhaust emissions

What causes the P2449 code?

Common causes for the P2449 fault code include:

• Faulty secondary air injection pump or relay
• Vacuum leaks in the air supply lines
• Blocked or clogged air passages
• Malfunctioning air control valves
• Defective sensors or wiring issues

How to fix P2449?

To resolve the P2449 fault code, the following steps should be taken:

• Inspect the secondary air injection system components for damage or wear
• Check for and repair any vacuum leaks in the system
• Replace the secondary air injection pump if it is faulty
• Test and replace any malfunctioning air control valves or sensors
• Clear the fault code and perform a test drive to verify the issue has been resolved