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Engine-Codes – Generic – P1457

P1457 Code - Evaporative Emissions Control System Leakage EVAP Canister System

Quick Answer

The P1457 code indicates a problem with the Evaporative Emissions Control System Leakage EVAP Canister System. Common causes include Loose or Damaged Hoses: Hoses connecting various components of the EVAP system may become loose or damaged over time, leading to a leak, Faulty EVAP Canister: A damaged EVAP canister can result in a leak in the system, Malfunctioning Purge Valve: The purge valve is responsible for controlling the flow of fuel vapors from the EVAP canister to the engine. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1457 indicates Evaporative Emissions Control System Leakage EVAP Canister System.
Common causes
Common causes include Loose or Damaged Hoses: Hoses connecting various components of the EVAP system may become loose or damaged over time, leading to a leak, Faulty EVAP Canister: A damaged EVAP canister can result in a leak in the system, Malfunctioning Purge Valve: The purge valve is responsible for controlling the flow of fuel vapors from the EVAP canister to the engine.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1457 Description

The P1457 code indicates a problem with the Evaporative Emissions Control System Leakage EVAP Canister System. The Evaporative Emissions Control System is responsible for capturing and storing fuel vapors that would otherwise be released into the atmosphere. The system includes various components such as the EVAP canister, purge valve, fuel tank pressure sensor, and fuel cap. When the P1457 code is triggered, it means that there is a leak in the EVAP system, allowing fuel vapors to escape into the atmosphere.

OBDII Code P1457 - Evaporative Emissions Control System Leakage EVAP Canister System
P1457 Code - Evaporative Emissions Control System Leakage EVAP Canister System

Common Causes of P1457

  1. Loose or Damaged Hoses: Hoses connecting various components of the EVAP system may become loose or damaged over time, leading to a leak.
  2. Faulty EVAP Canister: A damaged EVAP canister can result in a leak in the system.
  3. Malfunctioning Purge Valve: The purge valve is responsible for controlling the flow of fuel vapors from the EVAP canister to the engine. If the valve is faulty, it can cause a leak.
  4. Faulty Fuel Tank Pressure Sensor: The fuel tank pressure sensor monitors the pressure in the fuel tank. A malfunctioning sensor can lead to the P1457 code being triggered.

Symptoms of P1457

  1. Check Engine Light: The most common symptom associated with the P1457 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Fuel Smell: A strong fuel odor inside or outside the vehicle may indicate a leak in the EVAP system.
  3. Decreased Fuel Efficiency: If fuel vapors are escaping, it can lead to decreased fuel efficiency as the engine is not receiving all the necessary fuel.
  4. Failed Emissions Test: A leak in the EVAP system can cause the vehicle to fail emissions tests due to increased emissions.

How to Fix P1457

  1. Diagnose the Issue: Use a diagnostic tool to retrieve the P1457 code and pinpoint the exact cause of the leak in the EVAP system.
  2. Inspect EVAP System Components: Inspect all components of the EVAP system, including hoses, the EVAP canister, purge valve, and fuel tank pressure sensor, for any signs of damage or leaks.
  3. Repair or Replace Faulty Components: Depending on the diagnosis, repair or replace any faulty components that are causing the leak in the EVAP system.
  4. Clear Codes: Once the repairs are complete, clear the P1457 code from the vehicle's computer system to reset the check engine light.
  5. Perform a Leak Test: After repairs are made, perform a smoke or pressure test to ensure that the EVAP system is no longer leaking.

Cost to Fix P1457

The cost of repairing the P1457 code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair can range from $100 to $500, with labor costs adding an additional $100 to $200. Overall, expect to pay between $200 and $700 for the repair of the P1457 code. Keep in mind that labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type, so it's recommended to check local rates for a more accurate estimate.

What does this mean?

Tech Notes for P1457

Usually, a loose or bad fuel tank filler cap will trigger this code. Retighten the fuel tank filler cap and erase the code to repair the problem.









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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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