AutoCodes – Generic – P100B

P100B Code - VVEL Response Malfunction Bank 2

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: P100B indicates VVEL Response Malfunction Bank 2.
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 7,328

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 Jul 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P100B 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 eccentric cam is transmitted to 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 P100B - VVEL Response Malfunction Bank 2 - AutoCodes.com — P100B Code - VVEL Response Malfunction Bank 2

What does this mean?

What are the Possible Causes of the DTC P100B?

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 P100B?

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 P100B 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 P100B code?

Need more information on how to fix the P100B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P100B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P100B Infiniti — VVEL Response Malfunction Bank 2
P100B Nissan — VVEL Response Malfunction Bank 2

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 P100B Code

1. What are the common symptoms of OBDII code P100B (VVEL Response Malfunction Bank 2)?

- Common symptoms include decreased engine performance, rough idling, and potential stalling.

2. What are the possible causes of OBDII code P100B?

- The code P100B can be triggered by issues with the Variable Valve Event and Lift (VVEL) system, such as faulty components or wiring problems.

3. How can I diagnose the cause of OBDII code P100B?

- Diagnosis typically involves checking the VVEL system components, sensors, and wiring for any signs of damage or malfunction using a diagnostic scanner.

4. Can a dirty throttle body cause OBDII code P100B?

- Yes, a dirty or malfunctioning throttle body can sometimes lead to improper VVEL response and trigger the P100B code.

5. How can I repair OBDII code P100B at home?

- You can start by inspecting and cleaning the throttle body, checking the VVEL system components for loose connections, and ensuring proper wiring integrity.

6. Is it safe to continue driving with OBDII code P100B present?

- It's generally not recommended to drive with the P100B code active, as it can lead to further engine problems and potential safety risks.

7. Can a faulty oxygen sensor trigger OBDII code P100B?

- While less common, a faulty oxygen sensor can sometimes cause irregular VVEL responses and result in the P100B fault code.

8. Will resetting the OBDII system clear the P100B code permanently?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it typically cost to repair OBDII code P100B at a professional auto repair shop?

- The cost of repairs for P100B can vary depending on the exact cause, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a software update fix OBDII code P100B?

- In some cases, a software update from the manufacturer can address issues related to the VVEL system and resolve the P100B fault code.