AutoCodes – BMW – P0444 BMW

P0444 BMW Code - Evaporative Emission Control System Purge Control Valve Circuit Open

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: P0444 BMW indicates Evaporative Emission Control System Purge Control Valve Circuit Open.
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.

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Code Popularity 41,854

How popular is this code, among other codes? Medium

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
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Code P0444 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 P0444 BMW - Evaporative Emission Control System Purge Control Valve Circuit Open - AutoCodes.com — P0444 BMW Code - Evaporative Emission Control System Purge Control Valve Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0444 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 P0444 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 P0444 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.

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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 P0444 BMW Code

1. What are the common symptoms of OBDII code P0444 in a BMW?

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

2. What does the OBDII code P0444 in a BMW indicate?

- OBDII code P0444 indicates a problem with the Evaporative Emission Control System Purge Control Valve Circuit being open.

3. What are the possible causes of OBDII code P0444 in a BMW?

- Possible causes include a faulty purge control valve, damaged wiring or connectors in the circuit, a problem with the powertrain control module (PCM), or a vacuum leak in the system.

4. How can I diagnose the OBDII code P0444 in my BMW?

- Diagnosing the code involves checking the purge control valve for proper function, inspecting the wiring and connectors for any damage, and testing the PCM for any faults using a diagnostic tool.

5. Can I drive my BMW with OBDII code P0444?

- It is generally safe to drive the vehicle with this code, but it is recommended to get it diagnosed and repaired as soon as possible to prevent any further issues and maintain optimal vehicle performance.

6. How can I repair OBDII code P0444 in my BMW?

- Repairing the code typically involves replacing the faulty purge control valve, repairing any damaged wiring or connectors, or addressing any other underlying issues causing the circuit to be open.

7. Are there any DIY tips for fixing OBDII code P0444 in a BMW?

- While some basic checks like inspecting the wiring and connectors can be done DIY, it is recommended to consult a professional mechanic for a proper diagnosis and repair to ensure the issue is resolved correctly.

8. How much does it cost to fix OBDII code P0444 in a BMW?

- The cost of fixing this code can vary depending on the exact cause of the issue, but it may range from $100 to $500, including parts and labor.

9. Can OBDII code P0444 cause any long-term damage to my BMW?

- Ignoring this code can potentially lead to issues with the vehicle's emission control system, decreased fuel economy, and overall performance. It is best to address the problem promptly to prevent any further damage.

10. How long does it take to repair OBDII code P0444 in a BMW?

- The repair time can vary based on the specific cause of the code and the availability of parts, but it typically takes a few hours to a day to diagnose and fix the issue.