AutoCodes – Ford – P0406 2011 Ford Fusion

P0406 2011 Ford Fusion Code - Exhaust Gas Recirculation Sensor 'A' Circuit High

Quick Answer

The EGR monitor checks the EGR sensor signal to the Powertrain Control Module (PCM) for high voltage. Common causes include Faulty EGR volume control solenoid valve, Carbon built up on EGR valve, EGR volume control solenoid valve harness is open or shorted. 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: P0406 2011 Ford Fusion indicates Exhaust Gas Recirculation Sensor 'A' Circuit High.
Common causes: Common causes include Faulty EGR volume control solenoid valve, Carbon built up on EGR valve, EGR volume control solenoid valve harness is open or shorted.
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 3,032

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 Apr 18, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0406 2011 Ford Fusion Description

The EGR monitor checks the EGR sensor signal to the Powertrain Control Module (PCM) for high voltage. The test fails when the average voltage to the PCM exceeds the maximum calibrated value.

OBDII Code P0406 2011 Ford Fusion - Exhaust Gas Recirculation Sensor 'A' Circuit High - AutoCodes.com — P0406 2011 Ford Fusion Code - Exhaust Gas Recirculation Sensor 'A' Circuit High

What does this mean?

What are the Possible Causes of the DTC P0406 2011 Ford Fusion?

Faulty EGR volume control solenoid valve
Carbon built up on EGR valve
EGR volume control solenoid valve harness is open or shorted
EGR volume control solenoid valve circuit poor electrical connection
Faulty EGR temperature sensor and circuit

How to Fix the DTC P0406 2011 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 P0406 2011 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 P0406 2011 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 P0406 2011 Ford Fusion Code

1. What are common symptoms of OBDII code P0406 in a 2011 Ford Fusion?

Symptoms may include the check engine light illuminating, reduced fuel efficiency, engine hesitation, rough idling, and potentially stalling.

2. What does the OBDII code P0406 in a 2011 Ford Fusion indicate?

Code P0406 points to an issue with the Exhaust Gas Recirculation (EGR) Sensor 'A' Circuit registering high voltage levels, typically due to a malfunction in the EGR system.

3. What are possible causes of OBDII code P0406 in a 2011 Ford Fusion?

Causes can include a faulty EGR sensor, wiring or connector issues, carbon buildup in the EGR system, a clogged EGR valve, or problems with the EGR control solenoid.

4. How can I diagnose the cause of OBDII code P0406 in my 2011 Ford Fusion?

Diagnosis involves checking the EGR system components for proper functioning, inspecting wiring and connectors for damage, and using a multimeter to test voltage levels at the EGR sensor.

5. Can I continue to drive my 2011 Ford Fusion with OBDII code P0406?

It's not recommended to drive extensively with code P0406 as it can lead to poor engine performance and potentially cause further damage to the vehicle over time.

6. How can I repair OBDII code P0406 in my 2011 Ford Fusion?

Repair may involve replacing the EGR sensor, cleaning or replacing the EGR valve, fixing wiring/connectors, clearing carbon buildup, or addressing any other underlying issues in the EGR system.

7. Will resetting the check engine light resolve OBDII code P0406 in a 2011 Ford Fusion?

Simply resetting the light won't fix the underlying problem causing code P0406. It's necessary to diagnose and address the root cause to prevent the issue from recurring.

8. How much does it typically cost to repair OBDII code P0406 in a 2011 Ford Fusion?

Costs can vary depending on the specific issue causing the code, but repairs for code P0406 may range from $100 to $500 or more, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P0406 in a 2011 Ford Fusion?

Some repairs related to code P0406 may be tackled by DIY enthusiasts with the right tools and knowledge, such as replacing the EGR sensor or cleaning the EGR valve. However, more complex issues may require professional assistance.

10. How often does OBDII code P0406 occur in 2011 Ford Fusions?

While code P0406 is not extremely common in 2011 Ford Fusions, it can still occur due to various factors affecting the EGR system's performance. Regular maintenance and prompt diagnosis can help prevent this issue.