Engine-CodesFord – P1406 2011 Ford Fusion

P1406 2011 Ford Fusion Code - DPFE Sensor Circuit Downstream Hose

Quick Answer

The P1406 diagnostic trouble code (DTC) for a 2011 Ford Fusion indicates an issue with the DPFE (Differential Pressure Feedback EGR) sensor circuit downstream hose. Common causes include Damaged or deteriorated downstream hose, Loose or disconnected hose connections, Blockage in the hose. 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 2011 Ford Fusion indicates DPFE Sensor Circuit Downstream Hose.
Common causes
Common causes include Damaged or deteriorated downstream hose, Loose or disconnected hose connections, Blockage in the hose.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1406 2011 Ford Fusion Description

The P1406 diagnostic trouble code (DTC) for a 2011 Ford Fusion indicates an issue with the DPFE (Differential Pressure Feedback EGR) sensor circuit downstream hose. The DPFE sensor is a crucial component of the vehicle's EGR (Exhaust Gas Recirculation) system, which helps reduce emissions and improve fuel efficiency by recirculating a portion of the exhaust gases back into the combustion chambers. The downstream hose is responsible for transmitting pressure readings from the EGR system to the DPFE sensor.

OBDII Code P1406 2011 Ford Fusion - DPFE Sensor Circuit Downstream Hose
P1406 2011 Ford Fusion Code - DPFE Sensor Circuit Downstream Hose

Common Causes of P1406 2011 Ford Fusion

  1. Damaged or deteriorated downstream hose
  2. Loose or disconnected hose connections
  3. Blockage in the hose
  4. Faulty DPFE sensor
  5. Wiring or electrical issues in the sensor circuit

Symptoms of P1406 2011 Ford Fusion

  1. Rough idling
  2. Decreased fuel efficiency
  3. Hesitation or stalling during acceleration
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P1406 2011 Ford Fusion

  1. Begin by visually inspecting the downstream hose for any signs of damage, leaks, or blockages. Replace the hose if necessary.
  2. Check the hose connections to ensure they are secure and properly attached. Reconnect or tighten as needed.
  3. Test the DPFE sensor using a multimeter to verify its functionality. Replace the sensor if it is faulty.
  4. Inspect the wiring and connectors in the sensor circuit for any damage or corrosion. Repair or replace any damaged components.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1406 2011 Ford Fusion

The typical repair costs for addressing a P1406 DTC on a 2011 Ford Fusion can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Be sure to check with local shops for a more accurate estimate based on your location and vehicle specifics.

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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 2011 Ford Fusion Code

1. What does code P1406 mean on a 2011 Ford Fusion?

Code P1406 indicates an issue with the DPFE (Differential Pressure Feedback EGR) sensor circuit, specifically related to the downstream hose.

2. What are the symptoms of a P1406 code in a 2011 Ford Fusion?

Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, hesitation during acceleration, or the Check Engine Light being illuminated.

3. What causes the P1406 code to appear?

The most common causes are a damaged or clogged DPFE sensor, a disconnected or cracked downstream hose, carbon buildup in the EGR system, or faulty wiring to the DPFE sensor.

4. Can I still drive my 2011 Ford Fusion with a P1406 code?

While the car may still be operable, driving with a P1406 code can lead to poor performance, reduced fuel efficiency, and potential long-term engine damage if left unresolved.

5. How do I fix the P1406 code on a 2011 Ford Fusion?

Inspect and replace the downstream hose if damaged, clean or replace the DPFE sensor, check for carbon buildup in the EGR system, and repair any damaged wiring or connectors.

6. What tools do I need to diagnose the P1406 code?

You will need an OBDII scanner to retrieve and clear the code, a multimeter to test electrical connections, and possibly basic hand tools for replacing components.

7. How much does it cost to repair a P1406 code on a 2011 Ford Fusion?

Repair costs vary, but replacing a DPFE sensor typically costs between $50 and $150 for parts, plus labor if performed by a mechanic.

8. Can a clogged EGR valve cause the P1406 code?

Yes, a clogged EGR valve or carbon buildup in the EGR passages can indirectly contribute to the P1406 code by affecting the DPFE sensor readings.

9. Where is the DPFE sensor located on a 2011 Ford Fusion?

The DPFE sensor is usually located near the EGR valve and has two hoses connected to it for measuring exhaust gas pressure.

10. How can I prevent the P1406 code from recurring?

Regularly clean the EGR system, inspect hoses for damage, and replace the DPFE sensor if it shows signs of wear to prevent future issues.

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