AutoCodes – Nissan – P1800 2010 Nissan Altima Sedan

P1800 2010 Nissan Altima Sedan Code - Variable Intake Air System Control Solenoid Valve 1

Quick Answer

When the engine is running at low or medium speed, the power valve is fully closed. Common causes include Faulty Variable Intake Air System (VIAS) Control Solenoid Valve, VIAS Control Solenoid Valve circuit harness is open or shorted, VIAS Control Solenoid Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1800 2010 Nissan Altima Sedan indicates Variable Intake Air System Control Solenoid Valve 1.
Common causes: Common causes include Faulty Variable Intake Air System (VIAS) Control Solenoid Valve, VIAS Control Solenoid Valve circuit harness is open or shorted, VIAS Control Solenoid Valve circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 7,247

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 29, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1800 2010 Nissan Altima Sedan Description

When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the effective suction port length is equivalent to the total length of the intake manifold collector's suction port including the intake valve. This long suction port provides increased air intake which results in improved suction efficiency and higher torque generation.
The surge tank and one-way valve are provided. When the engine is running at high speed, the Engine Control Module (ECM) sends the signal to the Variable Intake Air System (VIAS) control solenoid valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore opens the power valve to two suction passages together in the collector.
Under this condition, the effective port length is equivalent to the length of the suction port provided independently for each cylinder. This shortened port length results in enhanced engine output with reduced suction resistance under high speeds.
The VIAS control solenoid valve cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator. The Diagnostic Trouble Code (DTC) will be set when an excessively low or high voltage signal is sent to ECM through the valve

OBDII Code P1800 2010 Nissan Altima Sedan - Variable Intake Air System Control Solenoid Valve 1 - AutoCodes.com — P1800 2010 Nissan Altima Sedan Code - Variable Intake Air System Control Solenoid Valve 1

What does this mean?

What are the Possible Causes of the DTC P1800 2010 Nissan Altima Sedan?

Faulty Variable Intake Air System (VIAS) Control Solenoid Valve
VIAS Control Solenoid Valve circuit harness is open or shorted
VIAS Control Solenoid Valve circuit poor electrical connection

How to Fix the DTC P1800 2010 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1800 2010 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.

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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 P1800 2010 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1800 in a 2010 Nissan Altima Sedan related to the Variable Intake Air System Control Solenoid Valve 1?

The common symptoms include rough idling, poor engine performance, and possible stalling of the vehicle.

2. What are the possible causes of OBDII code P1800 in a 2010 Nissan Altima Sedan?

The code P1800 in a 2010 Nissan Altima Sedan is typically triggered by a faulty Variable Intake Air System Control Solenoid Valve 1, wiring issues, or a failed solenoid valve.

3. How can I diagnose the Variable Intake Air System Control Solenoid Valve 1 issue causing OBDII code P1800 in my 2010 Nissan Altima Sedan?

You can diagnose the issue by visually inspecting the solenoid valve and its wiring, testing the valve's resistance, and checking for proper voltage supply.

4. Can I continue driving my 2010 Nissan Altima Sedan with OBDII code P1800 related to the Variable Intake Air System Control Solenoid Valve 1?

It is not advisable to drive the vehicle with this issue as it can lead to further damage and potential engine performance issues.

5. How can I repair OBDII code P1800 in my 2010 Nissan Altima Sedan caused by the Variable Intake Air System Control Solenoid Valve 1?

You can repair the issue by replacing the faulty Variable Intake Air System Control Solenoid Valve 1 with a new one and ensuring proper installation.

6. Are there any preventive measures to avoid OBDII code P1800 related to the Variable Intake Air System Control Solenoid Valve 1 in my 2010 Nissan Altima Sedan?

Regular maintenance checks, such as inspecting the solenoid valve and its wiring during scheduled services, can help prevent issues leading to code P1800.

7. Does cleaning the Variable Intake Air System Control Solenoid Valve 1 help resolve OBDII code P1800 in a 2010 Nissan Altima Sedan?

Cleaning the valve might temporarily improve its performance, but if the issue persists, it's recommended to replace the valve to ensure a long-term solution.

8. How much does it typically cost to replace the Variable Intake Air System Control Solenoid Valve 1 for OBDII code P1800 in a 2010 Nissan Altima Sedan?

The cost of replacing the Variable Intake Air System Control Solenoid Valve 1 can vary depending on the location and labor rates but generally ranges from $100 to $300.

9. Can a DIY enthusiast replace the Variable Intake Air System Control Solenoid Valve 1 to fix OBDII code P1800 in a 2010 Nissan Altima Sedan?

While it's possible for experienced DIY enthusiasts to replace the valve, it's recommended to consult a professional mechanic for proper diagnosis and repair to avoid any errors.

10. Will resetting the OBDII system clear the code P1800 related to the Variable Intake Air System Control Solenoid Valve 1 in my 2010 Nissan Altima Sedan?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the Variable Intake Air System Control Solenoid Valve 1 is not addressed, the code is likely to reappear.