AutoCodes – Ford – P0457 1998 Ford F150

P0457 1998 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 1998 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 3,029

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 1998 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 1998 Ford F150 - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off - AutoCodes.com — P0457 1998 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 1998 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 1998 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 1998 Ford F-150:
1998 Ford F-150 Factory Service Bulletin OBDII Code P0457

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0457 1998 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 1998 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 1998 Ford F150 Code

1. What are the common symptoms of OBDII code P0457 in a 1998 Ford F150?

- The common symptoms include the check engine light coming on, a strong fuel odor near the vehicle, and potential issues with the vehicle's fuel efficiency.

2. What can cause the OBDII code P0457 in a 1998 Ford F150?

- The most common cause of code P0457 is a loose or missing fuel filler cap, which can result in a leak in the EVAP (evaporative emission control) system.

3. How can I diagnose a loose fuel filler cap as the cause of OBDII code P0457 in my 1998 Ford F150?

- Check the fuel filler cap for proper tightness and condition. If it is loose, tighten it securely. Reset the check engine light and see if the code returns after driving.

4. What are some repair tips for fixing OBDII code P0457 in a 1998 Ford F150?

- Ensure the fuel filler cap is tightened properly. If the cap is damaged or missing, replace it with a new one designed for your vehicle. Clear the code and monitor for any reoccurrence.

5. Can OBDII code P0457 in a 1998 Ford F150 be caused by other issues besides a loose fuel filler cap?

- Yes, other potential causes of code P0457 include a damaged EVAP system component, such as a hose or valve, or a malfunctioning EVAP canister purge valve.

6. How serious is OBDII code P0457 in a 1998 Ford F150?

- While the code itself may not cause immediate drivability issues, it is important to address it promptly to prevent potential fuel leaks and ensure proper operation of the EVAP system.

7. Will OBDII code P0457 in a 1998 Ford F150 affect the vehicle's emissions or fuel economy?

- Yes, if left unresolved, code P0457 can lead to increased emissions and potentially impact the vehicle's fuel economy due to fuel evaporation issues.

8. Can I continue driving my 1998 Ford F150 with OBDII code P0457 without fixing it right away?

- It is generally not recommended to ignore OBDII code P0457, as it can lead to fuel evaporation issues and potentially affect the vehicle's emissions and fuel economy.

9. How much does it typically cost to repair OBDII code P0457 in a 1998 Ford F150?

- The cost of repair can vary depending on the cause of the code. In the case of a loose fuel filler cap, the cost is minimal for a new cap. If other components need replacement, the cost may increase.

10. Can I reset the check engine light myself after fixing OBDII code P0457 in my 1998 Ford F150?

- Yes, you can typically reset the check engine light by disconnecting the vehicle's battery for a few minutes or using an OBDII scanner to clear the code.