Engine-Codes.com
Engine-Codes – Mercury – P1407 Mercury

P1407 Mercury Code - Exhaust Gas Recirculation Flow Out Of Self-Test Range

Quick Answer

The P1407 diagnostic trouble code (DTC) for Mercury vehicles indicates that the Exhaust Gas Recirculation (EGR) system is experiencing a flow that is out of the self-test range. Common causes include Clogged EGR valve or passages, Malfunctioning EGR solenoid, EGR sensor failure. 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
P1407 Mercury indicates Exhaust Gas Recirculation Flow Out Of Self-Test Range.
Common causes
Common causes include Clogged EGR valve or passages, Malfunctioning EGR solenoid, EGR sensor failure.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1407 Mercury Description

The P1407 diagnostic trouble code (DTC) for Mercury vehicles indicates that the Exhaust Gas Recirculation (EGR) system is experiencing a flow that is out of the self-test range. The EGR system plays a crucial role in reducing harmful emissions by recirculating a portion of the exhaust gases back into the engine's intake system. By reintroducing exhaust gases into the combustion chamber, the EGR system helps lower the peak combustion temperature, which in turn reduces the formation of nitrogen oxides (NOx).

OBDII Code P1407 Mercury - Exhaust Gas Recirculation Flow Out Of Self-Test Range
P1407 Mercury Code - Exhaust Gas Recirculation Flow Out Of Self-Test Range

Common Causes of P1407 Mercury

  1. Clogged EGR valve or passages.
  2. Malfunctioning EGR solenoid.
  3. EGR sensor failure.
  4. Vacuum leaks in the EGR system.
  5. Wiring or electrical issues affecting the EGR system components.

Symptoms of P1407 Mercury

  1. Check engine light illuminated on the dashboard.
  2. Reduced engine performance, including decreased power and acceleration.
  3. Rough idling or stalling when the vehicle is stationary.
  4. Increased fuel consumption.
  5. Potential for increased emissions during vehicle operation.

How to Fix P1407 Mercury

  1. Begin by diagnosing the specific cause of the P1407 code using a scan tool to pinpoint the exact component or system that is malfunctioning.
  2. Inspect and clean the EGR valve and passages to ensure proper flow of exhaust gases.
  3. Test the EGR solenoid and sensor for functionality and replace if necessary.
  4. Check for vacuum leaks in the EGR system and repair as needed.
  5. Inspect the wiring and connections related to the EGR system to ensure proper electrical continuity.

Cost to Fix P1407 Mercury

The cost of repairing a P1407 code on a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. Typically, the cost of parts for an EGR system repair can range from $100 to $400, with labor costs adding an additional $100 to $300. Overall, the total repair cost for addressing a P1407 code could range from $200 to $700. It is important to note that these estimates are rough averages and actual costs may vary based on the vehicle's make and model, as well as the location of the repair shop. It is recommended to obtain quotes from multiple auto repair shops to ensure a competitive price for the repair.

Need more information about the P1407 Mercury code?

Need more information on how to fix the P1407 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1407 Mercury 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 P1407 Mercury Code

1. What are the common symptoms of OBDII code P1407 on a Mercury?

- Common symptoms include rough idling, engine hesitation, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What can cause the OBDII code P1407 on a Mercury?

- The code can be triggered by a faulty Exhaust Gas Recirculation (EGR) valve, a clogged EGR passage, or issues with the EGR system components.

3. How serious is the OBDII code P1407 on a Mercury?

- While the code may not cause immediate harm to the vehicle, it can lead to reduced engine performance and increased emissions if left unresolved.

4. Can a clogged EGR valve be cleaned to fix the P1407 code on a Mercury?

- Yes, in some cases, a clogged EGR valve can be cleaned to resolve the issue. However, if cleaning does not work, the valve may need to be replaced.

5. How can I troubleshoot the OBDII code P1407 on my Mercury?

- To troubleshoot the code, you can visually inspect the EGR system for leaks, test the EGR valve for proper operation, and check for any vacuum hose connections.

6. Is it safe to drive with the OBDII code P1407 illuminated on a Mercury?

- It is generally safe to drive with the code present, but it is recommended to address the issue promptly to prevent potential long-term engine damage.

7. What are the repair options for fixing the OBDII code P1407 on a Mercury?

- Repair options include cleaning or replacing the EGR valve, clearing any blockages in the EGR passages, checking and replacing vacuum hoses, or addressing any electrical issues in the EGR system.

8. Can a DIY enthusiast fix the OBDII code P1407 on a Mercury?

- Depending on the level of expertise, DIY enthusiasts may be able to address the issue by cleaning or replacing the EGR valve and performing basic troubleshooting steps.

9. Will resetting the Check Engine Light make the OBDII code P1407 go away on a Mercury?

- Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue causing the P1407 code is not fixed, the light is likely to come back on.

10. How can I prevent the recurrence of the OBDII code P1407 on my Mercury?

- To prevent the code from reoccurring, it is essential to perform regular maintenance on the EGR system, such as cleaning the EGR valve and ensuring proper functioning of all components.

Discuss the causes and fixes for P1407 Mercury OBDII Code

Submit a New Comment

Code P1407 Mercury comments

No comments found for this page.