AutoCodes – Nissan – P0445 2006 Nissan Maxima

P0445 2006 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 2006 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 4,591

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 2006 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 2006 Nissan Maxima - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted - AutoCodes.com — P0445 2006 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 2006 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 2006 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 2006 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 2006 Nissan Maxima 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 2006 Nissan Maxima Code

1. What does the P0445 code mean on a 2006 Nissan Maxima?

The P0445 code indicates a short circuit in the EVAP Canister Purge Volume Control Solenoid Valve, which is part of the evaporative emissions control system.

2. What are the common symptoms of the P0445 code?

The symptoms may include the Check Engine Light being illuminated, a noticeable fuel odor, and potentially reduced fuel efficiency.

3. What causes the P0445 code to appear?

Common causes include a faulty purge volume control solenoid valve, damaged wiring or electrical connectors, or a short circuit in the purge valve circuit.

4. Can a P0445 code cause serious damage if left unaddressed?

While it may not cause immediate damage, ignoring the code can lead to reduced fuel efficiency, increased emissions, and potential failure of an emissions test.

5. How do you diagnose the P0445 code?

Diagnosis involves using an OBD-II scanner to confirm the code, inspecting the purge valve wiring and connections for damage, and testing the solenoid valve for proper operation.

6. Can I drive my 2006 Nissan Maxima with a P0445 code?

Driving with this code is usually safe in the short term, but itâ€™s best to address it promptly to avoid potential emissions system issues.

7. How do you fix the P0445 code on a 2006 Nissan Maxima?

Common fixes include replacing the faulty purge volume control solenoid valve, repairing or replacing damaged wiring or connectors, and clearing the code with a scanner.

8. How much does it cost to repair a P0445 code?

The cost can vary, with replacement of the purge valve typically costing $100â€“$200, including parts and labor, depending on location and shop rates.

9. Can a loose gas cap cause a P0445 code?

No, a loose gas cap is more likely to trigger a P0455 or P0442 code. P0445 specifically points to an issue with the purge solenoid circuit.

10. Does the P0445 code require specialized tools to repair?

Basic tools can handle most repairs, but an OBD-II scanner is needed to confirm the code and clear it after repairs. A multimeter may also be required for electrical testing.