AutoCodes – GMC – P1B06 GMC

P1B06 GMC 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 GMC 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 1,037

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

What does this mean?

What are the Possible Causes of the DTC P1B06 GMC?

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 GMC?

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 GMC 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 GMC Code

1. What are the common symptoms of OBDII code P1B06 GMC?

- Common symptoms include illuminated check engine light, reduced engine power, and possible difficulty starting the vehicle.

2. What causes the Drive Motor 2 Control Module High Voltage System Interlock Circuit issue (P1B06 GMC)?

- The issue is typically caused by a malfunction in the high voltage system interlock circuit related to the drive motor control module.

3. How serious is the P1B06 GMC code?

- The code should be addressed promptly as it can affect the performance and drivability of the vehicle, potentially leading to further damage if left unresolved.

4. How can I diagnose the Drive Motor 2 Control Module High Voltage System Interlock Circuit problem?

- Diagnosis usually involves using an OBDII scanner to read the code and then conducting further testing to pinpoint the exact cause, which may require professional expertise.

5. Can I continue driving with the P1B06 GMC code present?

- It is not recommended to continue driving with the code present, as it can lead to more severe issues and safety concerns.

6. How can I repair the OBDII code P1B06 GMC?

- Repairing the code may involve inspecting and repairing the drive motor control module, checking the interlock circuit for faults, and ensuring proper connections.

7. Are there any DIY tips for fixing the Drive Motor 2 Control Module issue?

- While some basic troubleshooting can be done, it is advisable to seek assistance from a qualified mechanic or dealership due to the complexity of the high voltage system.

8. How much does it cost to fix the P1B06 GMC code?

- The cost of fixing this code can vary depending on the extent of the issue, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent mechanic.

9. Can a faulty sensor trigger the P1B06 GMC code?

- Yes, a faulty sensor related to the drive motor control module or high voltage system interlock circuit can potentially trigger the code and should be checked during diagnosis.

10. Is resetting the OBDII code P1B06 GMC sufficient to resolve the issue?

- Resetting the code may temporarily clear the check engine light, but it will not fix the underlying problem causing the Drive Motor 2 Control Module High Voltage System Interlock Circuit issue.