AutoCodes – Ford – P0455 2000 Ford F150

P0455 2000 Ford F150 Code - Evaporative Emission Control System Leak Detected Gross Leak

Quick Answer

Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. 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 2000 Ford F150 indicates Evaporative Emission Control System Leak Detected Gross Leak.
Common causes: Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
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.

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Code Popularity 10,499

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0455 2000 Ford F150 Description

Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. The EVAP system integrity check uses a Fuel Tank Pressure Transducer (FTPT), a Canister Vent Solenoid (CVS) and Fuel Level Input (FLI) along with the Vapor Management Valve (VMV) or Electric Vapor Management Valve (EVMV) to find 0.040" diameter or larger EVAP system leaks. Federal vehicles can utilize a 0.040" leak check rather than the 0.020" leak check required for California vehicles.
The Diagnostic Trouble Code (DTC) will set when the EVAP control system has a very large leak such as the fuel filler cap fell off, the EVAP control system does not operate properly.

OBDII Code P0455 2000 Ford F150 - Evaporative Emission Control System Leak Detected Gross Leak - AutoCodes.com — P0455 2000 Ford F150 Code - Evaporative Emission Control System Leak Detected Gross Leak

What does this mean?

What are the Possible Causes of the DTC P0455 2000 Ford F150?

Missing or loose fuel cap
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close
Foreign matter caught in fuel filler cap
EVAP canister or fuel tank leaks
EVAP system hose leaking
Fuel tank leaking

How to Fix the DTC P0455 2000 Ford F150?

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

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 2000 Ford F-150:
2000 Ford F-150 Factory Service Bulletin OBDII Code P0455

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0455 2000 Ford F150 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 P0455 2000 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 2000 Ford F150 Code

1. What does the OBDII code P0455 on a 2000 Ford F150 indicate?

The P0455 code indicates a "Evaporative Emission Control System Leak Detected Gross Leak" in the vehicle's system.

2. What are common symptoms of a P0455 code on a 2000 Ford F150?

Common symptoms include the check engine light illuminating, a strong gasoline odor near the vehicle, and potential difficulties passing emissions tests.

3. What are possible causes of a P0455 code on a 2000 Ford F150?

Common causes include a loose or damaged gas cap, cracked or disconnected EVAP system hoses, a faulty EVAP canister, or a malfunctioning purge valve.

4. How serious is a P0455 code on a 2000 Ford F150?

While a P0455 code may not cause immediate drivability issues, it can negatively impact the vehicle's emissions and fuel efficiency. It should be addressed promptly to prevent further problems.

5. How can I diagnose a P0455 code on a 2000 Ford F150?

Diagnosis typically involves checking the gas cap for proper sealing, inspecting EVAP system hoses for damage, testing the EVAP canister for leaks, and evaluating the purge valve's functionality.

6. Can I drive my 2000 Ford F150 with a P0455 code?

It is generally safe to drive the vehicle with a P0455 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid potential long-term problems.

7. How can I repair a P0455 code on a 2000 Ford F150?

Repair methods may include tightening or replacing the gas cap, repairing or replacing damaged EVAP system hoses, replacing the EVAP canister, or addressing any issues with the purge valve.

8. Will resetting the check engine light fix a P0455 code on a 2000 Ford F150?

Simply resetting the check engine light will not fix the underlying issue causing the P0455 code. It is important to diagnose the problem and make necessary repairs to resolve the code.

9. How much does it cost to repair a P0455 code on a 2000 Ford F150?

The cost of repairing a P0455 code can vary depending on the specific cause of the issue and the labor rates in your area. It is recommended to consult with a mechanic for an accurate estimate.

10. Can a P0455 code on a 2000 Ford F150 cause other problems if left unresolved?

If left unresolved, a P0455 code can lead to increased emissions, decreased fuel efficiency, and potential damage to other components of the vehicle's emission control system. It is best to address the issue promptly.