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P0455 2002 Ford F150 Code - Evaporative Emission Control System Leak Detected Gross Leak

Quick Answer

The P0455 code for a 2002 Ford F150 indicates that there is a detected gross leak in the evaporative emission control system. Common causes include Loose or damaged gas cap, Cracked or disconnected hoses, Faulty purge valve. 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
P0455 2002 Ford F150 indicates Evaporative Emission Control System Leak Detected Gross Leak.
Common causes
Common causes include Loose or damaged gas cap, Cracked or disconnected hoses, Faulty purge valve.
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 09, 2024
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Code P0455 2002 Ford F150 Description

The P0455 code for a 2002 Ford F150 indicates that there is a detected gross leak in the evaporative emission control system. This system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. When a gross leak is detected, it means that there is a significant issue with the system that needs to be addressed.

OBDII Code P0455 2002 Ford F150 - Evaporative Emission Control System Leak Detected Gross Leak
P0455 2002 Ford F150 Code - Evaporative Emission Control System Leak Detected Gross Leak

Common Causes of P0455 2002 Ford F150

  1. Loose or damaged gas cap
  2. Cracked or disconnected hoses
  3. Faulty purge valve
  4. Leaks in the fuel tank
  5. Malfunctioning charcoal canister

Symptoms of P0455 2002 Ford F150

  1. Check engine light illuminated
  2. Strong smell of gasoline near the vehicle
  3. Decreased fuel efficiency
  4. Hissing sound coming from the fuel tank area
  5. Difficulty starting the engine

How to Fix P0455 2002 Ford F150

  1. Inspect the gas cap for damage and ensure it is tightened properly.
  2. Check all hoses in the evaporative emission control system for cracks or disconnections and replace as needed.
  3. Test the purge valve for proper operation and replace if faulty.
  4. Inspect the fuel tank for leaks and repair as necessary.
  5. Verify the functionality of the charcoal canister and replace if it is not functioning correctly.

Cost to Fix P0455 2002 Ford F150

The typical repair cost for addressing a P0455 code on a 2002 Ford F150 can range from $100 to $500, depending on the specific cause of the issue and the extent of the repairs needed. This cost includes parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate. Keep in mind that rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower prices.

What does this mean?

Tech Notes for P0455 2002 Ford F150

The P0455 is a common code since it will set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.



The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. The system failure occurs when no purge flow (attributed to fuel vapor blockages or restrictions), a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running (but not at idle).



There is a factory service bulletin for the 2002 Ford F-150:

2002 Ford F-150 Factory Service Bulletin OBDII Code P0455

Need more information about the P0455 2002 Ford F150 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 P0455 2002 Ford F150 Code

1. What does OBDII code P0455 on a 2002 Ford F150 mean?

- OBDII code P0455 indicates that the Evaporative Emission Control System has detected a gross leak.

2. What are common symptoms of a P0455 code on a 2002 Ford F150?

- Common symptoms of a P0455 code may include the check engine light coming on, a fuel odor near the vehicle, or difficulty starting the engine.

3. What are possible causes of a P0455 code on a 2002 Ford F150?

- Possible causes of a P0455 code include a loose or damaged gas cap, a leak in the evaporative emission system, a faulty purge valve, or a cracked or damaged charcoal canister.

4. How serious is a P0455 code on a 2002 Ford F150?

- While a P0455 code may not cause immediate drivability issues, it can result in increased emissions and decreased fuel efficiency. It is important to address the issue promptly.

5. How can I diagnose a P0455 code on a 2002 Ford F150?

- Diagnosing a P0455 code typically involves checking the gas cap for tightness, inspecting the evaporative emission system components for leaks, and using a smoke machine to pinpoint the source of the leak.

6. Can I drive my 2002 Ford F150 with a P0455 code?

- It is generally safe to drive your vehicle with a P0455 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further emissions-related problems.

7. How can I repair a P0455 code on a 2002 Ford F150?

- Repairs for a P0455 code may involve tightening or replacing the gas cap, repairing or replacing damaged hoses or components in the evaporative emission system, or replacing a faulty purge valve.

8. Will resetting the check engine light resolve a P0455 code on a 2002 Ford F150?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the P0455 code. The problem should be diagnosed and repaired to prevent the code from returning.

9. How much does it cost to fix a P0455 code on a 2002 Ford F150?

- The cost to fix a P0455 code can vary depending on the specific cause of the issue and the labor rates in your area. Repairs may range from a simple gas cap replacement to more extensive system repairs.

10. Can a P0455 code on a 2002 Ford F150 cause the vehicle to fail an emissions test?

- Yes, a P0455 code can cause the vehicle to fail an emissions test due to increased emissions resulting from a leak in the evaporative emission control system. It is important to address the issue before attempting an emissions test.

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