AutoCodes – Infiniti – P100A 2009 Infiniti G37_sedan

P100A 2009 Infiniti G37_sedan Code - VVEL Response Malfunction Bank 1

Quick Answer

VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. Common causes include Faulty VVEL Actuator Motor, VVEL Actuator Motor harness is open or shorted, VVEL Actuator Motor 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: P100A 2009 Infiniti G37_sedan indicates VVEL Response Malfunction Bank 1.
Common causes: Common causes include Faulty VVEL Actuator Motor, VVEL Actuator Motor harness is open or shorted, VVEL Actuator Motor 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 3,807

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P100A 2009 Infiniti G37_sedan Description

VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. Rotational movement of the drive shaft equipped with an eccentric cam is transmitted to the output cam via the rocker arm and two kinds of links to depress the intake valve. The Engine Control Module (ECM) decides the target valve lift according to the driving condition and sends the command signal to the VVEL control module. The VVEL control module controls the rotation of the control shaft using the VVEL actuator motor and changes the movement of the output cam by shifting the link supporting point. As a result, valve lift changes continuously to improve engine output and response.

OBDII Code P100A 2009 Infiniti G37_sedan - VVEL Response Malfunction Bank 1 - AutoCodes.com — P100A 2009 Infiniti G37_sedan Code - VVEL Response Malfunction Bank 1

What does this mean?

What are the Possible Causes of the DTC P100A 2009 Infiniti G37_sedan?

Faulty VVEL Actuator Motor
VVEL Actuator Motor harness is open or shorted
VVEL Actuator Motor circuit poor electrical connection
Faulty VVEL actuator sub assembly
Faulty VVEL ladder assembly
Faulty VVEL control module

How to Fix the DTC P100A 2009 Infiniti G37_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 P100A 2009 Infiniti G37_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 P100A 2009 Infiniti G37_sedan Code

1. What are the common symptoms of OBDII code P100A on a 2009 Infiniti G37 sedan?

- Common symptoms include engine hesitation, loss of power, rough idle, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P100A in a 2009 Infiniti G37 sedan indicate?

- The code P100A indicates a VVEL (Variable Valve Event and Lift) response malfunction in Bank 1 of the engine.

3. What are the possible causes of the VVEL response malfunction in Bank 1 on a 2009 Infiniti G37 sedan?

- Possible causes include a faulty VVEL actuator, wiring issues, sensor malfunctions, or a problem with the VVEL control module.

4. How can I diagnose the VVEL response malfunction in Bank 1 on my 2009 Infiniti G37 sedan?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the VVEL components, checking for loose connections, and testing the VVEL actuator and sensors.

5. Can driving with the OBDII code P100A in a 2009 Infiniti G37 sedan cause further damage?

- Continuing to drive with the code may lead to reduced engine performance and fuel efficiency, and potentially cause damage to other engine components over time.

6. How can I repair the VVEL response malfunction in Bank 1 on my 2009 Infiniti G37 sedan?

- Repair options may include replacing the VVEL actuator, repairing or replacing damaged wiring or connectors, or resetting the VVEL system after addressing any underlying issues.

7. Is it possible to clear the OBDII code P100A on a 2009 Infiniti G37 sedan without fixing the underlying issue?

- While clearing the code may temporarily turn off the Check Engine light, it is essential to address the root cause of the VVEL response malfunction to prevent further problems.

8. Are there any maintenance tips to prevent the recurrence of the VVEL response malfunction in Bank 1 on a 2009 Infiniti G37 sedan?

- Regularly servicing the VVEL system, using high-quality engine oil, and maintaining proper engine operating conditions can help prevent the recurrence of the issue.

9. Can a DIY enthusiast with basic automotive knowledge repair the VVEL response malfunction in Bank 1 on a 2009 Infiniti G37 sedan?

- Depending on the specific cause, some DIY enthusiasts may be able to address the issue by following repair guides or tutorials, but complex issues may require professional assistance.

10. How long does it typically take to repair the VVEL response malfunction in Bank 1 on a 2009 Infiniti G37 sedan?

- The repair time can vary based on the exact cause of the malfunction, the availability of parts, and the skill level of the person performing the repair, but it may take anywhere from a few hours to a full day.