AutoCodes – Ford – P0457 2002 Ford F150

P0457 2002 Ford F150 Code - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off

Quick Answer

Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. Common causes include Missing fuel filler 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: P0457 2002 Ford F150 indicates EVAP Control System Leak Detected Fuel Filler Cap Loose/Off.
Common causes: Common causes include Missing fuel filler 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 4,896

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 Jun 25, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0457 2002 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 P0457 2002 Ford F150 - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off - AutoCodes.com — P0457 2002 Ford F150 Code - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off

What does this mean?

What are the Possible Causes of the DTC P0457 2002 Ford F150?

Missing fuel filler cap
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close
Foreign matter caught in fuel filler cap

How to Fix the DTC P0457 2002 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

Check for missing fuel filler cap or integrity of the cap.

There is a factory service bulletin for the 2002 Ford F-150:
2002 Ford F-150 Factory Service Bulletin OBDII Code P0457

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0457 2002 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 P0457 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 P0457 2002 Ford F150 Code

1. What does the OBDII code P0457 mean on a 2002 Ford F150?

P0457 indicates that the EVAP (Evaporative Emission Control) system has detected a significant leak, often caused by a loose or missing fuel filler cap.

2. What are the common symptoms of code P0457 in a 2002 Ford F150?

Common symptoms include the check engine light turning on, a possible fuel odor near the vehicle, and no noticeable changes in drivability.

3. Can a loose gas cap cause the P0457 code?

Yes, a loose or improperly sealed gas cap is the most common cause of the P0457 code.

4. How do I fix the P0457 code on my 2002 Ford F150?

Start by tightening or replacing the gas cap. If the code persists, inspect the EVAP system for leaks, such as a damaged hose or faulty components.

5. How can I tell if my fuel filler cap is the problem for P0457?

Check if the gas cap is loose, damaged, or missing. Replace it with a new cap if it doesnâ€™t seal properly.

6. Can I drive my 2002 Ford F150 with the P0457 code?

Yes, you can drive your truck, but itâ€™s best to address the issue promptly to prevent emissions problems or further damage to the EVAP system.

7. What other causes could trigger the P0457 code?

Aside from the gas cap, other causes include a cracked EVAP hose, a faulty purge valve, or a leak in the fuel tank.

8. How do I clear the P0457 code after fixing the issue?

You can clear the code using an OBDII scanner or by driving the vehicle for several cycles to allow the system to reset itself if the issue is resolved.

9. How much does it cost to repair a P0457 code on a 2002 Ford F150?

Costs vary depending on the cause. Replacing a gas cap is inexpensive, typically $10-$30, while repairing EVAP system leaks can range from $100 to $500 or more.

10. Can weather conditions cause the P0457 code?

Yes, extreme temperatures or sudden weather changes can sometimes cause seals or hoses in the EVAP system to fail, triggering the code.