AutoCodes – Ford – P0457 2011 Ford Focus

P0457 2011 Ford Focus Code - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the fuel level and retains the last updated value prior to the ignition switch being placed in the OFF position. 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 2011 Ford Focus 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 4,157

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 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0457 2011 Ford Focus Description

The Powertrain Control Module (PCM) continuously monitors the fuel level and retains the last updated value prior to the ignition switch being placed in the OFF position. After the ignition switch is placed in the ON position a new fuel level is taken and compared to the level recorded at ignition off. If the fuel level has increased, a flag is set in the PCM indicating the vehicle was refueled. If the evaporative emission (EVAP) monitor detects a gross leak while the refueling flag is set, a loose fuel filler cap or an incorrectly sealed fuel tank filler pipe (if equipped) is suspected and the DTC is set. On most vehicles when the DTC sets, either the check fuel cap indicator illuminates or a message on the instrument cluster displays to instruct the driver to check the fuel cap or capless fuel tank filler pipe (if equipped).

OBDII Code P0457 2011 Ford Focus - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off - AutoCodes.com — P0457 2011 Ford Focus Code - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off

What does this mean?

What are the Possible Causes of the DTC P0457 2011 Ford Focus?

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 2011 Ford Focus?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0457 2011 Ford Focus 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.

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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.