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P0457 Chrysler Code - EVAP System Loose Fuel Cap

Quick Answer

The P0457 diagnostic trouble code for Chrysler vehicles indicates that there is a loose fuel cap within the EVAP (Evaporative Emission Control) system. Common causes include Loose Fuel Cap: The most common cause of the P0457 code is simply a loose or improperly tightened fuel cap, Damaged Fuel Cap: A damaged or worn fuel cap may not seal properly, leading to the code being triggered, EVAP System Leak: Other leaks within the EVAP system, such as damaged hoses or valves, can also cause this code. 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 Chrysler indicates EVAP System Loose Fuel Cap.
Common causes
Common causes include Loose Fuel Cap: The most common cause of the P0457 code is simply a loose or improperly tightened fuel cap, Damaged Fuel Cap: A damaged or worn fuel cap may not seal properly, leading to the code being triggered, EVAP System Leak: Other leaks within the EVAP system, such as damaged hoses or valves, can also cause this code.
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 Aug 30, 2024
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Code P0457 Chrysler Description

The P0457 diagnostic trouble code for Chrysler vehicles indicates that there is a loose fuel cap within the EVAP (Evaporative Emission Control) system. The EVAP system is designed to capture fuel vapors from the fuel tank and prevent them from being released into the atmosphere. When the fuel cap is loose, it can lead to a leak in the system, causing issues with emissions control and potentially impacting the vehicle's overall performance.

OBDII Code P0457 Chrysler - EVAP System Loose Fuel Cap
P0457 Chrysler Code - EVAP System Loose Fuel Cap

Common Causes of P0457 Chrysler

  1. Loose Fuel Cap: The most common cause of the P0457 code is simply a loose or improperly tightened fuel cap.
  2. Damaged Fuel Cap: A damaged or worn fuel cap may not seal properly, leading to the code being triggered.
  3. EVAP System Leak: Other leaks within the EVAP system, such as damaged hoses or valves, can also cause this code.
  4. Faulty EVAP System Components: Malfunctioning components within the EVAP system, such as the purge valve or charcoal canister, can trigger the code.

Symptoms of P0457 Chrysler

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Fuel Smell: A noticeable fuel smell inside or outside the vehicle may indicate a problem with the EVAP system.
  3. Decreased Fuel Efficiency: A loose fuel cap can lead to fuel evaporation and decreased fuel efficiency.
  4. Difficulty Starting the Engine: In some cases, a loose fuel cap can cause difficulty starting the engine due to the imbalance in the fuel system.

How to Fix P0457 Chrysler

  1. Check Fuel Cap: Start by checking the fuel cap to ensure it is properly tightened and not damaged. Replace if necessary.
  2. Clear Codes: Use an OBD-II scanner to clear the diagnostic trouble codes and reset the check engine light.
  3. Inspect EVAP System: Inspect the EVAP system for any visible leaks or damage. Repair or replace components as needed.
  4. Perform Smoke Test: A smoke test can help identify any leaks in the EVAP system that may not be visible. Repair any leaks found during the test.
  5. Test Drive: After completing repairs, take the vehicle for a test drive to ensure the issue has been resolved and the code does not return.

Cost to Fix P0457 Chrysler

The cost of repairing a loose fuel cap issue (P0457 code) can vary depending on the specific cause and any additional repairs needed. In general, the cost of replacing a fuel cap is relatively low, typically ranging from $10 to $30 for the part. Labor costs can vary, but you can expect to pay anywhere from $50 to $150 for the repair, depending on the shop's hourly rates and any additional diagnostic or testing required. It's recommended to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P0457 Chrysler

Check for a loose, missing or damage fuel filler the cap.

When is the Code Detected?

EVAP control system has a very large leak such as fuel filler cap fell off

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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.

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