AutoCodes – Buick – P1B06 Buick

P1B06 Buick Code - Drive Motor 2 Control Module High Voltage System Interlock Circuit

Quick Answer

The high voltage interlock circuit is utilized to verify high voltage component integrity. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module 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: P1B06 Buick indicates Drive Motor 2 Control Module High Voltage System Interlock Circuit.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module 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 849

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 Mar 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B06 Buick Description

The high voltage interlock circuit is utilized to verify high voltage component integrity. High voltage interlock circuit is a circuit loop that passes through certain high voltage components. High voltage interlock circuit is used to determine if access to high voltage components is being attempted. The opening of these high voltage components causes the high voltage interlock circuit to open. The battery energy control module sources about 12 mA of current on the 5V high voltage interlock circuit loop. The battery energy control module monitors both the high voltage interlock source current circuit and the high voltage interlock return current circuit in order to detect circuit faults. Both motor control modules monitor the circuit for current in order to detect an open condition. When the battery energy control module and/or the motor control modules sense conditions such as a loss of high voltage interlock circuit current, the high voltage contactor relays are commanded open by the hybrid powertrain control module.

OBDII Code P1B06 Buick - Drive Motor 2 Control Module High Voltage System Interlock Circuit - AutoCodes.com — P1B06 Buick Code - Drive Motor 2 Control Module High Voltage System Interlock Circuit

What does this mean?

What are the Possible Causes of the DTC P1B06 Buick?

Faulty Drive Motor Generator Power Inverter Module
Drive Motor Generator Power Inverter Module harness is open or shorted
Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1B06 Buick?

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 P1B06 Buick 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 P1B06 Buick Code

1. What are the common symptoms of OBDII code P1B06 in a Buick related to the Drive Motor 2 Control Module High Voltage System Interlock Circuit?

- Common symptoms include the vehicle going into a reduced power mode, loss of power, and potential illumination of the check engine light.

2. What are some possible causes of OBDII code P1B06 in a Buick?

- Causes can include issues with the drive motor control module, wiring harness faults, high voltage system interlock circuit problems, or a faulty high voltage battery.

3. How can I diagnose the OBDII code P1B06 in my Buick?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, inspecting the drive motor control module and related wiring, and performing voltage tests to identify the issue.

4. Can I still drive my Buick with the OBDII code P1B06 present?

- It is not recommended to continue driving the vehicle with this code present, as it may lead to further damage or unsafe driving conditions.

5. How can I repair the Drive Motor 2 Control Module High Voltage System Interlock Circuit issue in my Buick?

- Repair options may include replacing the drive motor control module, repairing or replacing damaged wiring, addressing any high voltage system interlock circuit faults, or replacing the high voltage battery if necessary.

6. Is it safe to reset the OBDII code P1B06 in my Buick without addressing the underlying issue?

- Resetting the code without fixing the underlying problem may temporarily turn off the check engine light, but the issue will likely reoccur, and it can potentially lead to more severe problems down the line.

7. How much does it typically cost to repair OBDII code P1B06 in a Buick?

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

8. Can a DIY enthusiast with automotive experience fix the OBDII code P1B06 in a Buick?

- While some aspects of diagnosing and repairing this code may be possible for experienced DIY enthusiasts, dealing with high voltage systems and specialized components may require professional assistance.

9. Will OBDII code P1B06 cause any long-term damage to my Buick if left unresolved?

- Ignoring this code can lead to further complications with the high voltage system, potential damage to other components, reduced performance, and safety risks, so it's best to address it promptly.

10. Are there any preventative measures I can take to avoid encountering the OBDII code P1B06 in my Buick?

- Regular maintenance, monitoring the high voltage system, keeping an eye on warning lights, and addressing any issues promptly can help prevent the occurrence of this code.