AutoCodes – Generic – P2449

P2449 Code - Secondary Air Injection System High Air Flow Bank 2

Quick Answer

For 20 seconds following a vehicle cold start, the air injection system delivers a controlled amount of outside air into the exhaust system, upstream of the catalytic converter, in order to help reduce hydrocarbon and carbon monoxide gas emissions. Common causes include Leak in the Secondary Air System, Air Flow Sensor, Air Flow Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2449 indicates Secondary Air Injection System High Air Flow Bank 2.
Common causes: Common causes include Leak in the Secondary Air System, Air Flow Sensor, Air Flow Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,941

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2449 Description

OBDII Code P2449 - Secondary Air Injection System High Air Flow Bank 2 - AutoCodes.com — P2449 Code - Secondary Air Injection System High Air Flow Bank 2

What does this mean?

What are the Possible Causes of the DTC P2449?

Leak in the Secondary Air System
Air Flow Sensor
Air Flow Sensor harness is open or shorted
Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P2449?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2449 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2449 code?

Need more information on how to fix the P2449 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P2449 Chrysler — Secondary Air Injection System High Air Flow Bank 2
P2449 Dodge — Secondary Air Injection System High Air Flow Bank 2
P2449 Ford — Secondary Air Injection System High Air Flow Bank 2
P2449 Lincoln — Secondary Air Injection System High Air Flow Bank 2
P2449 Mercury — Secondary Air Injection System High Air Flow Bank 2

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.