AutoCodes – Ford – P0400 2011 Ford Fusion

P0400 2011 Ford Fusion Code - Exhaust Gas Recirculation Flow

Quick Answer

The electric EGR (EEGR) system is monitored once per drive cycle at high and low load conditions. Common causes include Exhaust Gas Recirculation (EGR) volume control valve stuck closed, Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve, Faulty EGR Valve. 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: P0400 2011 Ford Fusion indicates Exhaust Gas Recirculation Flow.
Common causes: Common causes include Exhaust Gas Recirculation (EGR) volume control valve stuck closed, Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve, Faulty EGR Valve.
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 8,309

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 15, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0400 2011 Ford Fusion Description

The electric EGR (EEGR) system is monitored once per drive cycle at high and low load conditions. The test fails when a concern is detected by Powertrain Control Module (PCM) calculations indicating the EGR flow is less or greater than expected.

OBDII Code P0400 2011 Ford Fusion - Exhaust Gas Recirculation Flow - AutoCodes.com — P0400 2011 Ford Fusion Code - Exhaust Gas Recirculation Flow

What does this mean?

What are the Possible Causes of the DTC P0400 2011 Ford Fusion?

Exhaust Gas Recirculation (EGR) volume control valve stuck closed
Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve
Faulty EGR Valve
Faulty EGR temperature sensor and circuit
Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted
Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection
Dead (Weak) battery

How to Fix the DTC P0400 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 does this mean?

Code Tech Notes

EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning the EGR valve, tube, and passages.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0400 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.

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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 P0400 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P0400 in a 2011 Ford Fusion?

The common symptoms include rough idling, engine stalling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does OBDII code P0400 indicate in a 2011 Ford Fusion?

Code P0400 indicates a malfunction in the Exhaust Gas Recirculation (EGR) flow system in the vehicle.

3. What are some possible causes of OBDII code P0400 in a 2011 Ford Fusion?

Possible causes include a faulty EGR valve, clogged EGR passages, a malfunctioning EGR vacuum modulator, or issues with the EGR position sensor.

4. How can I diagnose the OBDII code P0400 in my 2011 Ford Fusion?

Diagnosing code P0400 involves checking the EGR valve, inspecting the EGR passages for blockages, testing the EGR vacuum modulator, and assessing the EGR position sensor for proper functioning.

5. Can I continue driving my 2011 Ford Fusion with OBDII code P0400?

It is not recommended to drive the vehicle with an unresolved P0400 code as it can lead to poor engine performance and potentially cause further damage over time.

6. How can I repair OBDII code P0400 in my 2011 Ford Fusion?

Repair methods may include cleaning or replacing the EGR valve, clearing any blockages in the EGR passages, replacing the EGR vacuum modulator, or addressing any issues with the EGR position sensor.

7. Are there any simple DIY tips to address OBDII code P0400 in a 2011 Ford Fusion?

Simple DIY tips include checking for loose or disconnected EGR system hoses, cleaning the EGR valve and passages, and ensuring proper electrical connections to the EGR components.

8. Will resetting the check engine light resolve OBDII code P0400 in a 2011 Ford Fusion?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing code P0400. It is important to diagnose and repair the root cause of the problem.

9. How much does it typically cost to repair OBDII code P0400 in a 2011 Ford Fusion?

The cost of repairing code P0400 can vary depending on the specific issue, parts needed for replacement, and labor rates. It is advisable to consult a professional mechanic for an accurate cost estimate.

10. Can a mechanic help me with diagnosing and repairing OBDII code P0400 in my 2011 Ford Fusion?

Yes, a qualified mechanic or automotive technician can assist in diagnosing and repairing code P0400 to ensure proper functioning of the EGR system in your 2011 Ford Fusion.