AutoCodes – Mazda – P1407 Mazda

P1407 Mazda Code - EGR No Flow Detected

Quick Answer

P1407 Mazda indicates EGR No Flow Detected. Common causes include Damaged DPFE hoses, EGR orifice tube damaged, Fualty DPFE. 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 Mazda indicates EGR No Flow Detected.
Common causes: Common causes include Damaged DPFE hoses, EGR orifice tube damaged, Fualty DPFE.
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.

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Code Popularity 4,551

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
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Code P1407 Mazda Description

OBDII Code P1407 Mazda - EGR No Flow Detected - AutoCodes.com — P1407 Mazda Code - EGR No Flow Detected

What does this mean?

What are the Possible Causes of the DTC P1407 Mazda?

Damaged DPFE hoses
EGR orifice tube damaged
Fualty DPFE

How to Fix the DTC P1407 Mazda?

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 P1407 Mazda 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 P1407 Mazda code?

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

Need Help with the Code?

Get the P1407 Mazda 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 Mazda Code

1. What are the common symptoms of OBDII code P1407 in a Mazda related to EGR No Flow Detected?

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

2. What are the possible causes of OBDII code P1407 indicating EGR No Flow Detected in a Mazda?

- The code can be triggered by a faulty EGR valve, clogged EGR passages, wiring issues, or a malfunctioning EGR position sensor.

3. How can I diagnose the cause of OBDII code P1407 in my Mazda related to EGR No Flow Detected?

- Use a scan tool to read the code and perform a visual inspection of the EGR system components, checking for clogs, leaks, or electrical issues.

4. Can a dirty EGR valve cause OBDII code P1407 in a Mazda?

- Yes, a dirty or clogged EGR valve can restrict flow and trigger the P1407 code due to insufficient exhaust gas recirculation.

5. What are some repair tips for resolving OBDII code P1407 related to EGR No Flow Detected in a Mazda?

- Try cleaning the EGR valve and passages first to see if that resolves the issue before considering replacing any components.

6. Is it safe to continue driving with OBDII code P1407 in a Mazda indicating EGR No Flow Detected?

- It's not recommended to drive for an extended period with this code as it can lead to poor engine performance and potential damage if left unresolved.

7. Can a malfunctioning EGR position sensor trigger OBDII code P1407 in a Mazda?

- Yes, a faulty EGR position sensor can disrupt the EGR system's operation and lead to insufficient flow, triggering the P1407 code.

8. How much does it typically cost to repair OBDII code P1407 related to EGR No Flow Detected in a Mazda?

- The cost can vary depending on the specific issue, but it may range from $100-$500 for parts and labor, with cleaning being a more affordable option.

9. Will disconnecting the EGR system temporarily clear OBDII code P1407 in a Mazda?

- Disconnecting the EGR system may temporarily clear the code, but it is not a recommended solution as it does not address the underlying issue causing the code.

10. Can a Mazda owner with basic mechanical skills fix OBDII code P1407 indicating EGR No Flow Detected?

- Depending on the cause, some owners may be able to clean or replace the EGR components themselves, but diagnosing complex issues may require professional help.