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P0451 Ford Code - Evaporative Emission Control System Pressure Sensor Range/Performance

Quick Answer

The P0451 Ford code indicates a problem with the Evaporative Emission Control System Pressure Sensor, which is responsible for monitoring the pressure within the fuel tank and the evaporative emissions system. Common causes include Faulty Evaporative Emission Control System Pressure Sensor, Loose or damaged fuel cap, Leaking fuel tank or fuel lines. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0451 Ford indicates Evaporative Emission Control System Pressure Sensor Range/Performance.
Common causes
Common causes include Faulty Evaporative Emission Control System Pressure Sensor, Loose or damaged fuel cap, Leaking fuel tank or fuel lines.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0451 Ford Description

The P0451 Ford code indicates a problem with the Evaporative Emission Control System Pressure Sensor, which is responsible for monitoring the pressure within the fuel tank and the evaporative emissions system. This sensor plays a crucial role in ensuring that the vehicle's emissions are within the acceptable range and that no fuel vapors are escaping into the atmosphere. When this sensor detects a range or performance issue, it can lead to increased emissions, decreased fuel efficiency, and potential harm to the environment.

OBDII Code P0451 Ford - Evaporative Emission Control System Pressure Sensor Range/Performance
P0451 Ford Code - Evaporative Emission Control System Pressure Sensor Range/Performance

Common Causes of P0451 Ford

  1. Faulty Evaporative Emission Control System Pressure Sensor
  2. Loose or damaged fuel cap
  3. Leaking fuel tank or fuel lines
  4. Wiring or electrical issues
  5. Issues with the evaporative emissions system

Symptoms of P0451 Ford

  1. Check Engine Light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Strong fuel odor near the vehicle
  5. Failed emissions test

How to Fix P0451 Ford

  1. Diagnose the issue using a scan tool to confirm the P0451 code and identify the specific cause
  2. Inspect the fuel cap for any damage or looseness, and replace if necessary
  3. Check for any leaks in the fuel tank or fuel lines, and repair or replace as needed
  4. Test the Evaporative Emission Control System Pressure Sensor and replace if faulty
  5. Clear the code and perform a test drive to ensure the issue has been resolved

Cost to Fix P0451 Ford

The typical repair costs for resolving a P0451 Ford code can range from $100 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates can vary, so it's recommended to consult with local auto repair shops for a more accurate estimate. Keep in mind that addressing this issue promptly can prevent further damage to the vehicle and ensure compliance with emissions regulations.

What does this mean?

Tech Notes for P0451 Ford

There is a Factory Service Bulletin for the following Ford Models:
2005-2008 Ford Escape Hybrid
2005-2008 Ford Escape
2005-2008 Ford Escape Factory Service Bulletin OBDII Code P0451

When is the Code Detected?

An improper voltage signal from EVAP control system pressure sensor is sent to Engine Control Module (ECM).

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Information for Specific Ford Models

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 P0451 Ford Code

1. What are common symptoms of OBDII code P0451 Ford?

- Common symptoms include the illumination of the check engine light, issues with fuel economy, and potential difficulties during vehicle refueling.

2. What causes OBDII code P0451 Ford to trigger?

- The code is typically triggered by a faulty evaporative emission control system pressure sensor, issues with the sensor circuit, or problems with the sensor signal.

3. How can I diagnose the cause of OBDII code P0451 Ford?

- Diagnosis involves checking the evaporative emission control system pressure sensor for proper operation, inspecting the sensor's wiring and connectors for damage, and verifying the sensor's signal accuracy.

4. Can a bad gas cap cause OBDII code P0451 Ford?

- While a faulty gas cap can sometimes trigger similar codes related to the evaporative emission system, it is less likely to cause OBDII code P0451 specifically.

5. What are the potential repair options for OBDII code P0451 Ford?

- Repair options may include replacing the evaporative emission control system pressure sensor, repairing any damaged wiring or connectors, or addressing issues with the sensor circuit.

6. Is it safe to continue driving with OBDII code P0451 Ford?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent potential negative impacts on the vehicle's performance and emissions.

7. Can OBDII code P0451 Ford be reset without fixing the underlying issue?

- While the code can be cleared using an OBDII scanner, it is important to address the root cause to prevent the code from reoccurring and ensure proper vehicle operation.

8. Are there any DIY repair tips for addressing OBDII code P0451 Ford?

- DIY repair tips may include visually inspecting the sensor and its connections for obvious issues, checking the gas cap for proper sealing, and testing the sensor's voltage output.

9. How much does it typically cost to repair OBDII code P0451 Ford at a mechanic or dealership?

- Repair costs can vary depending on the extent of the issue and labor rates, but replacing the evaporative emission control system pressure sensor may cost between $150 to $300 at a mechanic or dealership.

10. Does OBDII code P0451 Ford affect vehicle performance?

- While the code itself may not significantly impact vehicle performance, addressing the underlying issue is important to ensure proper emissions control and overall vehicle health.

Discuss the causes and fixes for P0451 Ford OBDII Code

Submit a New Comment

  • What is location of evaporative control presure sensor

    Reply to Comment

  • Sensor is usually on top or around the gas tank. What model and year is your Ford?

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  • I have a Ford Escape 2004 Limited. Error Code: p0451. Anyone know if the part is located on the top of the tank or is it in the Fuel Pump Assembly area under the left passenger seat?

    Reply to Comment

  • The Evaporative Emission System (EVAP) Pressure Sensor is right on top of the fuel tank and you should be able to access the sensor by removing the rear seat.

    Reply to Comment

  • Ford Fiesta 2012

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  • 2012 ford f150 5.0 code P0451 cap less gas tank, been receiving codes or warning for this, then the other day, my miles to empty started decreasing a lot, meaning the pressure in tank not reading correctly, says replace fuel tank pressure sensor, but ford will not give part no on sensor, wants you to buy the complete gas line, can you help

    Reply to Comment

  • location of FTP ON 2012 FORD F150 AND PART NO PLEASE

    Reply to Comment