AutoCodes – Nissan – P0445 2005 Nissan Altima Sedan

P0445 2005 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 2005 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 3,587

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

What does OBDII code P0445 mean for a 2005 Nissan Altima Sedan?

OBDII code P0445 indicates a short circuit in the EVAP canister purge volume control solenoid valve circuit, which affects the vehicle's evaporative emissions system.

What are the common symptoms of P0445 in a 2005 Nissan Altima?

Common symptoms include a check engine light, rough idling, decreased fuel efficiency, and, in some cases, difficulty starting the engine.

What could cause the P0445 code to trigger in a 2005 Nissan Altima?

Causes may include a faulty purge valve, damaged wiring or connectors in the solenoid circuit, or a malfunctioning engine control module (ECM).

How can I diagnose the issue related to P0445?

To diagnose P0445, inspect the wiring and connectors for damage, test the purge valve for proper operation, and use a multimeter to check for continuity in the circuit.

What repairs are typically needed to fix the P0445 code?

Repairs may involve replacing the EVAP canister purge volume control solenoid, repairing wiring or connectors, or, in rare cases, replacing the ECM if it is found to be faulty.

Can I drive my 2005 Nissan Altima with the P0445 code?

While you can drive the vehicle, it's not advisable as it could lead to reduced fuel efficiency and increased emissions, and may result in failing an emissions test.

How do I clear the P0445 code after repairs?

You can clear the P0445 code using an OBDII scanner, or by disconnecting the vehicle's battery for a few minutes, but be sure to perform necessary repairs before clearing the code.

Is it necessary to replace the EVAP canister when facing a P0445 code?

Not necessarily. The EVAP canister itself may not be the issue; focus on testing the purge valve and the circuit first before deciding to replace the canister.

What should I check if the P0445 code returns after repairs?

If the code reappears, recheck the wiring and connectors for any damage, verify the new purge valve is functioning correctly, and consider testing the ECM for faults.