Engine-CodesDodge – P0457 Dodge

P0457 Dodge Code - EVAP System Loose Fuel Cap

Quick Answer

The P0457 code for Dodge vehicles refers to a problem with the EVAP (Evaporative Emission Control) system, specifically indicating a loose fuel cap. Common causes include Loose or improperly sealed fuel cap, Damaged fuel cap seal, Faulty EVAP system components. 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 Dodge indicates EVAP System Loose Fuel Cap.
Common causes
Common causes include Loose or improperly sealed fuel cap, Damaged fuel cap seal, Faulty EVAP system components.
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.
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code P0457 Dodge Description

The P0457 code for Dodge vehicles refers to a problem with the EVAP (Evaporative Emission Control) system, specifically indicating a loose fuel cap. The EVAP system is designed to capture and store fuel vapors from the fuel tank to prevent them from being released into the atmosphere. A loose fuel cap can disrupt this system, leading to issues with emissions control and potentially causing the vehicle to fail emissions tests.

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

Common Causes of P0457 Dodge

  1. Loose or improperly sealed fuel cap
  2. Damaged fuel cap seal
  3. Faulty EVAP system components
  4. Fuel cap not securely tightened after refueling
  5. Fuel cap missing or damaged

Symptoms of P0457 Dodge

  1. Check engine light illuminated
  2. Fuel smell near the fuel cap
  3. Decreased fuel efficiency
  4. Failed emissions test

How to Fix P0457 Dodge

  1. Check the fuel cap for any visible signs of damage or wear.
  2. Ensure the fuel cap is securely tightened by turning it until it clicks.
  3. Clear the diagnostic trouble codes using an OBD-II scanner.
  4. Drive the vehicle to see if the check engine light re-illuminates.
  5. If the issue persists, inspect the EVAP system components for leaks or damage.

Cost to Fix P0457 Dodge

The cost of repairing a loose fuel cap causing the P0457 code can vary depending on the specific issue. In general, replacing a fuel cap can range from $20 to $50 for the part. Labor costs may add an additional $50 to $100, depending on the shop's hourly rate. Overall, the total cost for this repair is typically between $70 and $150. It's important to note that prices can vary based on location and the specific make and model of the vehicle. Be sure to consult with a trusted mechanic for an accurate estimate.

Tech Notes for P0457 Dodge

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.

Frequently Asked Questions about P0457 Dodge Code

No Frequently Asked Questions about P0457 Dodge Code found.

Discuss the causes and fixes for P0457 Dodge OBDII Code

  • already replaced the gas cap, what is my next step.

  • Did you use a factory gas cap?
    The Powertrain Control Unit (PCM) detects that the gas cap is loose or missing because is not holding pressure. My suggestion is to have a shop with a smog machine apply smog to the EVAP system and check for leak, otherwise it may get too expensive to start replacing other EVAP system parts.

  • I have a 2010 Dodge Charger r/t 5.7 I have the same problem, replaced the cap from a dodge dealer ship and i still have the same problem. Now when I open the cap while the car is running you can hear popping noises coming from the tank.