AutoCodes – Nissan – P0445 2005 Nissan Maxima

P0445 2005 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted

Quick Answer

The Evaporative Emission System (EVAP) Canister Purge Volume Control Solenoid Valve controls 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: P0445 2005 Nissan Maxima indicates EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted.
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 3,800

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0445 2005 Nissan Maxima Description

The Evaporative Emission System (EVAP) Canister Purge Volume Control Solenoid Valve controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the Engine Control Module (ECM). The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the air flow changes.
The 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 ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

OBDII Code P0445 2005 Nissan Maxima - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted - AutoCodes.com — P0445 2005 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P0445 2005 Nissan Maxima?

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 P0445 2005 Nissan Maxima?

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 does this mean?

Code Tech Notes

It's a very common problem with Nissan vehicles. If the harness is not damage it's very likely that the problem is the canister purge volume control solenoid valve.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0445 2005 Nissan Maxima 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 P0445 2005 Nissan Maxima code?

Need more information on how to fix the P0445 2005 Nissan Maxima code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0445 2005 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0445 in a 2005 Nissan Maxima?

Symptoms may include rough idling, stalling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0445 indicate in a 2005 Nissan Maxima?

This code specifically points to a problem with the EVAP Canister Purge Volume Control Solenoid Valve circuit being shorted.

3. What are the possible causes of OBDII code P0445 in a 2005 Nissan Maxima?

Causes may include a faulty purge volume control solenoid valve, damaged wiring or connectors in the circuit, or a problem with the engine control module.

4. How can I diagnose the issue related to OBDII code P0445 in a 2005 Nissan Maxima?

You can use a scan tool to check for the code, visually inspect the wiring and connectors, test the purge volume control solenoid valve, and perform a smoke test to detect any leaks in the EVAP system.

5. Can I still drive my 2005 Nissan Maxima with the OBDII code P0445 present?

It is generally not recommended to continue driving the vehicle with this code, as it can lead to further damage and potential safety hazards.

6. How do I repair OBDII code P0445 in a 2005 Nissan Maxima?

Repair options may include replacing the purge volume control solenoid valve, repairing or replacing damaged wiring or connectors, or resetting the engine control module after fixing the issue.

7. Is it possible to reset the check engine light after fixing OBDII code P0445 in a 2005 Nissan Maxima?

Yes, you can reset the check engine light using an OBDII scan tool or by disconnecting the car battery for a few minutes.

8. How much does it typically cost to repair OBDII code P0445 in a 2005 Nissan Maxima?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Are there any preventive maintenance tips to avoid OBDII code P0445 in a 2005 Nissan Maxima?

Regularly inspecting the EVAP system components, such as the purge volume control solenoid valve and associated wiring, can help prevent issues leading to this code.

10. Can a DIY enthusiast fix OBDII code P0445 in a 2005 Nissan Maxima?

While some basic troubleshooting and repairs can be done by a DIY enthusiast, it is recommended to consult a professional mechanic for accurate diagnosis and repair of this code.