AutoCodes – Infiniti – P1131 Infiniti

P1131 Infiniti Code - Swirl Control Valve Control Solenoid Valve

Quick Answer

This system has a swirl control valve in the intake passage of each cylinder. Common causes include Faulty Swirl control valve control solenoid valve, Swirl control valve control solenoid valve circuit is open or shorted, Swirl control valve circuit is open or shorted. 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: P1131 Infiniti indicates Swirl Control Valve Control Solenoid Valve.
Common causes: Common causes include Faulty Swirl control valve control solenoid valve, Swirl control valve control solenoid valve circuit is open or shorted, Swirl control valve circuit is open or shorted.
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 10,480

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 Apr 28, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1131 Infiniti Description

This system has a swirl control valve in the intake passage of each cylinder.
While idling and during low engine speed operation, the swirl control valve closes. Thus the velocity of the air in the intake passage increases, promoting the vaporization of the fuel and producing a swirl in the combustion chamber.
Because of this operation, this system tends to increase the burning speed of the gas mixture, improve fuel consumption, and increase the stability in running conditions.
Also, except when idling and during low engine speed operation, this system opens the swirl control valve. In this condition, this system tends to increase power by improving intake efficiency via reduction of intake flow resistance, intake flow.
The solenoid valve controls swirl control valve’s shut/open condition. This solenoid valve is operated by the Engine Control Module (ECM).
The swirl control valve control solenoid valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the solenoid valve is bypassed to apply intake manifold vacuum to the swirl control valve actuator. This operation closes the swirl control valve. When the ECM sends an OFF signal, the vacuum signal is cut and the swirl control valve opens.

OBDII Code P1131 Infiniti - Swirl Control Valve Control Solenoid Valve - AutoCodes.com — P1131 Infiniti Code - Swirl Control Valve Control Solenoid Valve

What does this mean?

What are the Possible Causes of the DTC P1131 Infiniti?

Faulty Swirl control valve control solenoid valve
Swirl control valve control solenoid valve circuit is open or shorted
Swirl control valve circuit is open or shorted
Faulty swirl control valve
Faulty Swirl control valve actuator

How to Fix the DTC P1131 Infiniti?

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 P1131 Infiniti 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 P1131 Infiniti code?

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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 P1131 Infiniti Code

1. What is OBDII code P1131 in an Infiniti, specifically related to the Swirl Control Valve Control Solenoid Valve?

- OBDII code P1131 on an Infiniti indicates a potential issue with the Swirl Control Valve Control Solenoid Valve, which is responsible for regulating airflow in the intake manifold.

2. What are common symptoms of a Swirl Control Valve Control Solenoid Valve malfunction in an Infiniti?

- Common symptoms include rough idle, engine misfires, reduced fuel efficiency, and a noticeable decrease in engine performance.

3. What are potential causes of OBDII code P1131 related to the Swirl Control Valve Control Solenoid Valve in an Infiniti?

- Causes may include a faulty solenoid valve, wiring issues, vacuum leaks, carbon buildup in the intake system, or a malfunctioning intake manifold runner control (IMRC) module.

4. How can I diagnose a Swirl Control Valve Control Solenoid Valve problem in my Infiniti?

- Diagnosing the issue may involve using an OBDII scanner to read the code, inspecting the solenoid valve and its wiring for damage, checking for vacuum leaks, and testing the functionality of the IMRC module.

5. Can a Swirl Control Valve Control Solenoid Valve issue be repaired at home?

- Depending on the exact cause of the problem, some DIY repairs may be possible, such as cleaning carbon buildup or replacing a faulty solenoid valve. However, more complex issues may require professional diagnosis and repair.

6. Is it safe to continue driving with OBDII code P1131 related to the Swirl Control Valve Control Solenoid Valve in my Infiniti?

- It is not recommended to continue driving with this code unresolved, as it can lead to further engine damage and reduced performance. It's best to address the issue promptly.

7. How much does it typically cost to repair a Swirl Control Valve Control Solenoid Valve problem in an Infiniti?

- The cost of repairs can vary depending on the exact cause of the issue and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs may range from a few hundred to over a thousand dollars.

8. Are there any preventive maintenance tips to avoid OBDII code P1131 related to the Swirl Control Valve Control Solenoid Valve in an Infiniti?

- Regularly inspecting and cleaning the intake system, using high-quality fuel, and following the manufacturer's recommended maintenance schedule can help prevent issues with the Swirl Control Valve Control Solenoid Valve.

9. Can a Swirl Control Valve Control Solenoid Valve issue affect the emissions performance of my Infiniti?

- Yes, a malfunctioning Swirl Control Valve Control Solenoid Valve can affect emissions performance, potentially leading to increased emissions and causing your vehicle to fail emissions tests.

10. How long does it take to repair a Swirl Control Valve Control Solenoid Valve problem in an Infiniti?

- The repair time can vary depending on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved repairs could take a day or more.