AutoCodes – BMW – P0459 BMW

P0459 BMW Code - Evaporative Emission Purge Solenoid Control Circuit High Voltage

Quick Answer

The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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 BMW indicates Evaporative Emission Purge Solenoid Control Circuit High Voltage.
Common causes: Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,997

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0459 BMW Description

The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Engine Control Module (ECM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

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

What does this mean?

What are the Possible Causes of the DTC P0459 BMW?

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

How to Fix the DTC P0459 BMW?

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 BMW 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 BMW code?

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

Need Help with the Code?

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

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 BMW Code

1. What does the OBDII code P0459 mean on a BMW?

P0459 indicates that the Evaporative Emission Purge Solenoid Control Circuit is experiencing high voltage, which means the purge valve may not be operating correctly.

2. What are the common symptoms of a P0459 code on a BMW?

Symptoms may include the check engine light turning on, a noticeable fuel odor, reduced fuel efficiency, or difficulty starting the engine.

3. What causes the P0459 code to appear on a BMW?

Common causes include a faulty purge solenoid valve, damaged wiring, a defective control module, or a short circuit in the electrical system.

4. Can I drive my BMW with a P0459 code?

While the car may still be drivable, ignoring the code can lead to increased emissions and potential long-term damage to the EVAP system.

5. How do I fix the P0459 code on a BMW?

Possible fixes include replacing the purge solenoid valve, repairing or replacing damaged wiring, or addressing issues with the control module.

6. How do I diagnose a P0459 code on a BMW?

Start by inspecting the purge valve, checking for damaged wiring or connectors, and using a multimeter to test the electrical circuit for continuity or shorts.

7. How much does it cost to repair a P0459 code on a BMW?

Repair costs can vary but typically range from $100 to $300, depending on whether the issue is with the purge valve or wiring.

8. Can a loose gas cap cause a P0459 code?

No, a loose gas cap is not a common cause of a P0459 code, as it specifically relates to the purge solenoid circuit and not the fuel tank pressure.

9. Will clearing the P0459 code fix the issue permanently?

Clearing the code may temporarily turn off the check engine light, but the root cause of the problem must be addressed to prevent the code from returning.

10. Is the P0459 code covered under BMW's warranty?

It depends on your vehicle's warranty and mileage. EVAP system components are often covered under emissions warranties, so check with your dealer for details.