AutoCodes – Audi – P0459 Audi

P0459 Audi Code - EVAP System Purge Control Solenoid High

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 Audi indicates EVAP System Purge Control Solenoid High.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,458
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0459 Audi 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 Audi - EVAP System Purge Control Solenoid High - AutoCodes.com
P0459 Audi Code - EVAP System Purge Control Solenoid High

What are the Possible Causes of the DTC P0459 Audi?

  • 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 Audi?

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 Audi 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.

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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 Audi Code

1. What are the common symptoms of OBDII code P0459 in an Audi related to the EVAP system purge control solenoid high?

The common symptoms include the check engine light illuminating on the dashboard, decreased fuel efficiency, rough idling, and potentially a strong smell of fuel.

2. What are the possible causes of OBDII code P0459 in an Audi?

The code P0459 typically indicates a malfunction in the EVAP system purge control solenoid circuit. Possible causes include a faulty purge control solenoid, wiring issues, or a damaged EVAP system.

3. How serious is OBDII code P0459 in an Audi, and can I continue driving the vehicle with this code?

While the code P0459 itself may not cause immediate harm to the vehicle, it is important to address the underlying issue promptly to prevent potential damage to the EVAP system or decreased fuel efficiency. It is generally safe to drive the vehicle to a repair shop for diagnosis and repair.

4. How can I diagnose OBDII code P0459 in my Audi related to the EVAP system purge control solenoid high?

Diagnosing OBDII code P0459 typically involves using an OBDII scanner to read the code, followed by inspecting the purge control solenoid, checking the wiring for any damage, and testing the EVAP system components for proper functioning.

5. What are some repair tips for fixing OBDII code P0459 in an Audi?

Repairing OBDII code P0459 often involves replacing the faulty EVAP system purge control solenoid, repairing any damaged wiring, or addressing issues with the EVAP system components. It is recommended to follow the manufacturer's repair procedures or seek assistance from a professional mechanic.

6. Can I reset OBDII code P0459 in my Audi without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is not recommended to reset the code without addressing the root cause. The check engine light may temporarily turn off, but the issue will likely reoccur, leading to potential long-term problems.

7. How much does it cost to repair OBDII code P0459 in an Audi at a repair shop?

The cost of repairing OBDII code P0459 can vary depending on the specific issue, labor rates, and parts needed. It is advisable to obtain quotes from reputable repair shops to determine the estimated cost of the repair.

8. Are there any preventive maintenance measures I can take to avoid OBDII code P0459 in my Audi?

To prevent OBDII code P0459, it is recommended to regularly inspect the EVAP system components, such as the purge control solenoid, for any signs of wear or damage. Additionally, ensuring proper maintenance of the vehicle can help prevent issues with the EVAP system.

9. Can a DIY enthusiast fix OBDII code P0459 in an Audi, or is it best left to a professional mechanic?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P0459, it is generally recommended to seek assistance from a professional mechanic. The EVAP system is a crucial component of the vehicle, and improper repairs can lead to further issues down the line.

10. How long does it typically take to repair OBDII code P0459 in an Audi?

The repair time for OBDII code P0459 can vary depending on the extent of the issue, availability of parts, and the skill level of the mechanic. In most cases, the repair can be completed within a few hours to a day, but it is advisable to consult with the repair shop for a more accurate estimate.

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