AutoCodes – Chevrolet – P0459 Chevrolet

P0459 Chevrolet Code - Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage

Quick Answer

The Evaporative Emission (EVAP) Purge Solenoid Valve is used to purge fuel vapor from the EVAP canister to the intake manifold. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Valve, Evaporative Emission Purge Solenoid Valve harness is open or shorted, Evaporative Emission Purge Solenoid Valve circuit poor electrical connection. 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 Chevrolet indicates Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage.
Common causes: Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Valve, Evaporative Emission Purge Solenoid Valve harness is open or shorted, Evaporative Emission Purge Solenoid Valve circuit poor electrical connection.
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 11,884

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 27, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0459 Chevrolet Description

The Evaporative Emission (EVAP) Purge Solenoid Valve is used to purge fuel vapor from the EVAP canister to the intake manifold. The EVAP purge solenoid valve is Pulse Width Modulated (PWM). Ignition voltage is supplied directly to the EVAP purge solenoid valve. The Engine Control Module (ECM) controls the solenoid valve by grounding the control circuit with a solid-state device called a driver. The driver is equipped with a feedback circuit that is pulled up to a voltage. The ECM can determine if the control circuit is open, shorted to the ground, or shorted to a voltage by monitoring the feedback voltage. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the EVAP purge solenoid valve control circuit is shorted to voltage within 0.25 s.

OBDII Code P0459 Chevrolet - Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage - AutoCodes.com — P0459 Chevrolet Code - Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0459 Chevrolet?

Faulty Evaporative Emission (EVAP) Purge Solenoid Valve
Evaporative Emission Purge Solenoid Valve harness is open or shorted
Evaporative Emission Purge Solenoid Valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0459 Chevrolet?

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 P0459 Chevrolet 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.

Need more information about the P0459 Chevrolet code?

Need more information on how to fix the P0459 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0459 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0459 2014 Chevrolet Silverado — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
P0459 2015 Chevrolet Silverado — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
P0459 2016 Chevrolet Silverado — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
P0459 2017 Chevrolet Silverado — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
P0459 2018 Chevrolet Silverado — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage

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 Chevrolet Code

1. What are common symptoms of OBDII code P0459 in a Chevrolet vehicle?

- Common symptoms include the check engine light being illuminated, rough idling, decreased fuel efficiency, and potential issues with starting the vehicle.

2. What does the OBDII code P0459 in a Chevrolet indicate?

- The code P0459 indicates a problem with the evaporative emission purge solenoid valve control circuit having high voltage.

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

- The code P0459 in a Chevrolet can be triggered by a faulty evaporative emission purge solenoid, damaged wiring or connectors, a defective PCM, or a vacuum leak in the EVAP system.

4. How can I diagnose the cause of OBDII code P0459 in my Chevrolet?

- Diagnosing the cause of P0459 involves checking the wiring and connectors for damage, testing the evaporative emission purge solenoid, and inspecting the EVAP system for leaks.

5. Can driving with OBDII code P0459 in a Chevrolet cause further damage?

- Continuing to drive with code P0459 may lead to decreased fuel efficiency and potential damage to other components of the EVAP system, but it is unlikely to cause immediate severe harm to the vehicle.

6. Is it safe to continue driving my Chevrolet with the OBDII code P0459 present?

- It is generally safe to drive the vehicle with the code P0459, but it is recommended to address the issue promptly to prevent any potential long-term damage or performance issues.

7. How can I repair OBDII code P0459 in my Chevrolet?

- Repairing the P0459 code may involve replacing the evaporative emission purge solenoid, repairing damaged wiring or connectors, resetting the PCM, and ensuring the EVAP system is sealed properly.

8. Can I reset the check engine light after fixing OBDII code P0459 in my Chevrolet?

- After fixing the issue causing code P0459, you can reset the check engine light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

9. Are there any preventive maintenance tips to avoid OBDII code P0459 in a Chevrolet?

- Regularly inspecting the EVAP system, checking for loose or damaged wiring, and ensuring the evaporative emission purge solenoid is functioning properly can help prevent code P0459 from occurring.

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

- Depending on their skill level, a DIY enthusiast may be able to diagnose and fix code P0459 by following repair guides, but professional assistance may be necessary for more complex issues.