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P0459 Volkswagen Code - EVAP System Purge Control Solenoid High

Quick Answer

The P0459 code for Volkswagen vehicles indicates a problem with the EVAP (Evaporative Emission Control) system purge control solenoid, specifically that the signal being received is too high. Common causes include Malfunctioning EVAP system purge control solenoid, Wiring or electrical issues, Vacuum leaks in the EVAP system. 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
P0459 Volkswagen indicates EVAP System Purge Control Solenoid High.
Common causes
Common causes include Malfunctioning EVAP system purge control solenoid, Wiring or electrical issues, Vacuum leaks in the EVAP system.
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 Sep 06, 2024
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Code P0459 Volkswagen Description

The P0459 code for Volkswagen vehicles indicates a problem with the EVAP (Evaporative Emission Control) system purge control solenoid, specifically that the signal being received is too high. The EVAP system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from being released into the atmosphere. The purge control solenoid is an essential component that controls the flow of fuel vapors from the charcoal canister to the engine for combustion. When this solenoid is not functioning correctly, it can lead to increased emissions, decreased fuel efficiency, and potential drivability issues.

OBDII Code P0459 Volkswagen - EVAP System Purge Control Solenoid High
P0459 Volkswagen Code - EVAP System Purge Control Solenoid High

Common Causes of P0459 Volkswagen

  1. Malfunctioning EVAP system purge control solenoid
  2. Wiring or electrical issues
  3. Vacuum leaks in the EVAP system
  4. Faulty EVAP canister or charcoal canister
  5. ECM (Engine Control Module) failure

Symptoms of P0459 Volkswagen

  1. Check Engine Light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Strong fuel odor
  5. Failure to pass emissions test

How to Fix P0459 Volkswagen

  1. Diagnose the specific cause of the P0459 code using a scan tool
  2. Inspect and test the EVAP system purge control solenoid
  3. Check the wiring and connectors for any damage or corrosion
  4. Test the EVAP canister and charcoal canister for leaks or malfunctions
  5. Replace any faulty components as needed and clear the code from the ECM

Cost to Fix P0459 Volkswagen

The cost to repair the P0459 code on a Volkswagen vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor. Keep in mind that prices may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It's recommended to get a few quotes from different auto repair shops to ensure you're getting a fair price for the repair.

When is the Code Detected?

The Engine Control Module (ECM) has detected a high voltage on the canister purge solenoid with the driver commanded on

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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 P0459 Volkswagen Code

1. What are the common symptoms of OBDII code P0459 in a Volkswagen?

The common symptoms of code P0459 in a Volkswagen may include the check engine light illuminating, a strong smell of fuel, rough idling, and issues with the vehicle's fuel efficiency.

2. What does OBDII code P0459 indicate in a Volkswagen?

OBDII code P0459 in a Volkswagen indicates a problem with the EVAP system purge control solenoid circuit being high.

3. What are the possible causes of OBDII code P0459 in a Volkswagen?

Possible causes of code P0459 in a Volkswagen include a faulty EVAP system purge control solenoid, damaged wiring or connectors in the circuit, a vacuum leak in the EVAP system, or a problem with the vehicle's computer.

4. How is OBDII code P0459 diagnosed in a Volkswagen?

Diagnosing code P0459 in a Volkswagen typically involves using an OBDII scanner to retrieve the code, inspecting the EVAP system components for any visible damage, testing the purge control solenoid, and checking the wiring and connectors for any faults.

5. Can I continue driving my Volkswagen with OBDII code P0459?

It is not recommended to continue driving your Volkswagen with OBDII code P0459, as it can lead to decreased fuel efficiency, poor engine performance, and potential damage to the EVAP system components.

6. How can OBDII code P0459 be repaired in a Volkswagen?

Repairing OBDII code P0459 in a Volkswagen typically involves replacing the faulty EVAP system purge control solenoid, repairing any damaged wiring or connectors, fixing any vacuum leaks in the EVAP system, and clearing the trouble code from the vehicle's computer.

7. Does OBDII code P0459 pose any safety risks in a Volkswagen?

While OBDII code P0459 itself does not pose immediate safety risks, ignoring the issue can lead to decreased fuel efficiency and potential damage to the vehicle's emissions system over time.

8. Can I reset OBDII code P0459 in a Volkswagen without fixing the underlying issue?

Resetting OBDII code P0459 in a Volkswagen without fixing the underlying issue will only temporarily clear the check engine light, but the problem will likely resurface until the root cause is addressed.

9. How much does it cost to repair OBDII code P0459 in a Volkswagen?

The cost to repair OBDII code P0459 in a Volkswagen can vary depending on the specific issue, with potential costs including parts for the solenoid replacement, labor for diagnosis and repair, and any additional components needed to fix the problem.

10. Can a DIY enthusiast fix OBDII code P0459 in a Volkswagen?

While some DIY enthusiasts may have the skills and tools necessary to address OBDII code P0459 in a Volkswagen, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

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