AutoCodes – Ford – P1406 2010 Ford Fusion

P1406 2010 Ford Fusion Code - DPFE Sensor Circuit Downstream Hose

Quick Answer

The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. Common causes include Downstream hose is disconnected, Downstream hose is plugged (ice), Plugged or damaged Exhaust Gas Recirculation (EGR) tube. 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: P1406 2010 Ford Fusion indicates DPFE Sensor Circuit Downstream Hose.
Common causes: Common causes include Downstream hose is disconnected, Downstream hose is plugged (ice), Plugged or damaged Exhaust Gas Recirculation (EGR) tube.
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 2,511

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 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1406 2010 Ford Fusion Description

The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. This is done by redirecting small amounts of exhaust gas back through the upper intake to get mixed in with the air/fuel charge.
While driving, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the differential pressure feedback EGR sensor continues to indicate EGR flow even after the EGR valve is commanded closed.

OBDII Code P1406 2010 Ford Fusion - DPFE Sensor Circuit Downstream Hose - AutoCodes.com — P1406 2010 Ford Fusion Code - DPFE Sensor Circuit Downstream Hose

What does this mean?

What are the Possible Causes of the DTC P1406 2010 Ford Fusion?

Downstream hose is disconnected
Downstream hose is plugged (ice)
Plugged or damaged Exhaust Gas Recirculation (EGR) tube
Faulty Differential Pressure Feedback Electronic (DPFE) sensor
Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection

How to Fix the DTC P1406 2010 Ford Fusion?

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 P1406 2010 Ford Fusion 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 P1406 2010 Ford Fusion code?

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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 P1406 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P1406 in a 2010 Ford Fusion?

The common symptoms include rough idling, loss of power, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P1406 on a 2010 Ford Fusion indicate?

This code indicates an issue with the DPFE (Differential Pressure Feedback EGR) sensor circuit downstream hose.

3. What are the potential causes of OBDII code P1406 in a 2010 Ford Fusion?

Potential causes include a faulty DPFE sensor, damaged downstream hose, clogged EGR passages, or wiring issues in the sensor circuit.

4. How can I diagnose the cause of OBDII code P1406 in my 2010 Ford Fusion?

Diagnosis involves visually inspecting the DPFE sensor and downstream hose, checking for clogs in the EGR passages, testing the sensor circuit with a multimeter, and scanning for any related codes.

5. Can I continue driving my 2010 Ford Fusion with OBDII code P1406?

It is not recommended to drive your vehicle with this code as it can lead to reduced performance and potential damage to the EGR system.

6. How can I repair OBDII code P1406 on my 2010 Ford Fusion?

Repair options include replacing the DPFE sensor, repairing or replacing the downstream hose, cleaning out any clogs in the EGR system, and fixing any wiring issues in the sensor circuit.

7. Is it possible to reset OBDII code P1406 in a 2010 Ford Fusion without fixing the underlying issue?

While you can clear the code with an OBDII scanner, the Check Engine Light is likely to come back on if the root cause of the problem is not addressed.

8. Are there any maintenance tips to prevent OBDII code P1406 in a 2010 Ford Fusion?

Regularly inspecting and cleaning the EGR system, ensuring proper installation of the DPFE sensor and downstream hose, and using quality fuel can help prevent this code.

9. How much does it typically cost to repair OBDII code P1406 on a 2010 Ford Fusion?

The cost of repair can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

10. Can a DIY enthusiast fix OBDII code P1406 on a 2010 Ford Fusion?

While some aspects of the repair may be DIY-friendly, it is recommended to have a good understanding of automotive systems and access to appropriate tools before attempting the repair.