AutoCodes – Nissan – P0445 2008 Nissan Altima Sedan

P0445 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan 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 4,421

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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted - AutoCodes.com — P0445 2008 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P0445 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan Code

1. What does OBDII code P0445 mean on a 2008 Nissan Altima Sedan?

Code P0445 indicates a short circuit in the EVAP Canister Purge Volume Control Solenoid Valve circuit, part of the vehicle's evaporative emission control system.

2. What are the common symptoms of P0445 in a 2008 Nissan Altima?

Symptoms may include an illuminated Check Engine Light, a noticeable fuel smell, reduced fuel efficiency, or difficulty starting the engine.

3. What causes the P0445 code to appear on a 2008 Nissan Altima?

Common causes include a shorted or faulty purge control solenoid valve, damaged wiring or connectors, or a malfunctioning ECM (Engine Control Module).

4. Can I still drive my 2008 Nissan Altima with a P0445 code?

While the car may still be drivable, ignoring the issue can lead to increased emissions, poor fuel efficiency, and possible damage to other components.

5. How do I diagnose the P0445 code on a 2008 Nissan Altima?

Start by inspecting the purge control solenoid valve, wiring, and connectors for damage or shorts. Use a multimeter to test the circuit and confirm proper operation.

6. How can I fix the P0445 code on my 2008 Nissan Altima?

Repairs may involve replacing the faulty purge control solenoid valve, repairing damaged wiring or connectors, or addressing issues with the ECM.

7. How much does it cost to fix a P0445 code on a 2008 Nissan Altima?

Repair costs vary but typically range from $100 to $300, depending on whether the purge solenoid valve or wiring needs replacement.

8. Can a loose gas cap cause the P0445 code on a 2008 Nissan Altima?

No, a loose gas cap typically triggers a different EVAP-related code, such as P0455 or P0456. P0445 specifically relates to the purge solenoid valve circuit.

9. How do I prevent the P0445 code from recurring?

Regularly inspect the EVAP system components, including the purge valve and wiring, and address any issues promptly to prevent future problems.

10. Will clearing the P0445 code fix the issue on my 2008 Nissan Altima?

Clearing the code with a scanner will turn off the Check Engine Light temporarily, but the issue will return if the underlying problem is not resolved.