AutoCodes – Mercedes-Benz – P1411 Mercedes-Benz

P1411 Mercedes-Benz Code - Secondary Air Injection System Malfunction

Quick Answer

Secondary Air Injection Downstream (AIR) Flow. Common causes include Faulty Secondary Air Injection Downstream (AIR) pump, Hose off or blocked, Bypass solenoid stuck open/closed. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P1411 Mercedes-Benz indicates Secondary Air Injection System Malfunction.
Common causes: Common causes include Faulty Secondary Air Injection Downstream (AIR) pump, Hose off or blocked, Bypass solenoid stuck open/closed.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 8,845

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1411 Mercedes-Benz Description

Secondary Air Injection Downstream (AIR) Flow. The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system Electric AIR Pump Hose from AIR pump leak AIR bypass solenoid leak/blocked Hose from AIR pump blocked AIR bypass solenoid stuck open/closed In order to test the AIR pump, it must be capable of driving the HO2S lean.

OBDII Code P1411 Mercedes-Benz - Secondary Air Injection System Malfunction - AutoCodes.com — P1411 Mercedes-Benz Code - Secondary Air Injection System Malfunction

What does this mean?

What are the Possible Causes of the DTC P1411 Mercedes-Benz?

Faulty Secondary Air Injection Downstream (AIR) pump
Hose off or blocked
Bypass solenoid stuck open/closed

How to Fix the DTC P1411 Mercedes-Benz?

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 P1411 Mercedes-Benz 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 P1411 Mercedes-Benz code?

Need more information on how to fix the P1411 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1411 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P1411 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P1411 in a Mercedes-Benz related to the Secondary Air Injection System Malfunction?

- Common symptoms include rough idling, decreased engine performance, and the illumination of the check engine light.

2. What are the potential causes of OBDII code P1411 in a Mercedes-Benz?

- The code P1411 in a Mercedes-Benz is often triggered by issues such as a faulty secondary air injection pump, a clogged air filter, or a malfunctioning air injection valve.

3. How can I diagnose the OBDII code P1411 in my Mercedes-Benz?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, conducting visual inspections of the air injection system components, and performing system tests to pinpoint the issue.

4. Is it safe to continue driving my Mercedes-Benz with the OBDII code P1411 active?

- While the vehicle may still be operable with the code present, it is recommended to address the issue promptly to prevent potential damage to the engine or emissions system.

5. What are some repair tips for resolving the OBDII code P1411 in a Mercedes-Benz?

- Repair tips may include checking and replacing the secondary air injection pump, cleaning or replacing the air filter, inspecting and repairing air injection system hoses, and ensuring proper electrical connections.

6. Can a DIY enthusiast fix the OBDII code P1411 issue in a Mercedes-Benz?

- Depending on the level of expertise, a DIY enthusiast may be able to address simpler causes of the code, such as replacing the air filter or checking for loose connections. However, more complex issues may require professional assistance.

7. How much does it typically cost to repair the OBDII code P1411 in a Mercedes-Benz?

- The cost of repairs can vary depending on the specific cause of the code and the labor rates in your area. It's advisable to consult a mechanic for a diagnosis and accurate cost estimate.

8. Will resetting the check engine light make the OBDII code P1411 disappear in my Mercedes-Benz?

- Resetting the check engine light without addressing the underlying issue will not fix the problem. The code is likely to reappear once the system detects the fault again.

9. How important is it to fix the OBDII code P1411 in a Mercedes-Benz promptly?

- Addressing the OBDII code P1411 promptly is crucial to ensure optimal engine performance, minimize emissions, and prevent potential long-term damage to the vehicle's components.

10. Can the OBDII code P1411 in a Mercedes-Benz be related to other underlying issues?

- While the code specifically points to a secondary air injection system malfunction, it's essential to conduct a comprehensive diagnosis to rule out any other potential problems that may be impacting the system.