AutoCodes – Ford – P0405 2010 Ford Fusion

P0405 2010 Ford Fusion Code - Exhaust Gas Recirculation Sensor 'A' Circuit Low

Quick Answer

The EGR monitor checks the differential pressure feedback EGR sensor signal to the Powertrain Control Module (PCM) for low 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: P0405 2010 Ford Fusion indicates Exhaust Gas Recirculation Sensor 'A' Circuit Low.
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 3,135

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0405 2010 Ford Fusion Description

The EGR monitor checks the differential pressure feedback EGR sensor signal to the Powertrain Control Module (PCM) for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value.

OBDII Code P0405 2010 Ford Fusion - Exhaust Gas Recirculation Sensor 'A' Circuit Low - AutoCodes.com — P0405 2010 Ford Fusion Code - Exhaust Gas Recirculation Sensor 'A' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0405 2010 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 P0405 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 P0405 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 P0405 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 P0405 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P0405 in a 2010 Ford Fusion?

The common symptoms of P0405 in a 2010 Ford Fusion include rough idling, poor fuel economy, engine stalling, and the illumination of the Check Engine light.

2. What does the OBDII code P0405 for a 2010 Ford Fusion indicate?

P0405 indicates a malfunction in the Exhaust Gas Recirculation (EGR) Sensor 'A' Circuit, specifically detecting a low voltage condition.

3. What are the possible causes of the P0405 code in a 2010 Ford Fusion?

Possible causes of P0405 in a 2010 Ford Fusion include a faulty EGR sensor, damaged wiring or connectors in the EGR circuit, or issues with the EGR valve itself.

4. How can I diagnose the P0405 code in my 2010 Ford Fusion?

Diagnosing the P0405 code involves using an OBDII scanner to retrieve the code, inspecting the EGR sensor and its wiring for damage, and checking the EGR valve for proper operation.

5. Can I continue driving my 2010 Ford Fusion with the P0405 code present?

It is not recommended to continue driving with the P0405 code present in your 2010 Ford Fusion as it can lead to decreased engine performance and potential long-term damage if left unresolved.

6. How can I repair the P0405 code in my 2010 Ford Fusion?

Repairing the P0405 code may involve replacing the EGR sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the EGR valve itself.

7. Is it possible to reset the P0405 code in a 2010 Ford Fusion without fixing the issue?

While you can clear the code with an OBDII scanner, it is not recommended to reset the code without addressing the underlying problem, as it will likely reoccur and potentially worsen over time.

8. Can a dirty EGR system cause the P0405 code in a 2010 Ford Fusion?

Yes, a dirty EGR system can potentially cause the P0405 code in a 2010 Ford Fusion as it can affect the proper functioning of the EGR sensor and circuit.

9. How much does it cost to fix the P0405 code in a 2010 Ford Fusion?

The cost to fix the P0405 code in a 2010 Ford Fusion can vary depending on the exact cause of the issue, but it may range from around $100 to $300 for parts and labor.

10. How often does the P0405 code occur in a 2010 Ford Fusion?

The P0405 code can occur sporadically in a 2010 Ford Fusion due to various factors such as driving conditions, maintenance history, and the overall health of the EGR system.