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P1B06 Cadillac 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 Cadillac 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 1,166

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

What does this mean?

What are the Possible Causes of the DTC P1B06 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include the check engine light illuminating, reduced engine power, and potential issues with the vehicle's hybrid or electric drive system.

2. What are the possible causes of OBDII code P1B06 in a Cadillac?

- Possible causes may include a faulty drive motor control module, damaged wiring or connectors in the high voltage system, or issues with the interlock circuit itself.

3. How serious is OBDII code P1B06 in a Cadillac?

- This code should be addressed promptly to prevent potential damage to the vehicle's hybrid or electric drive system. Continuing to drive with this code may result in reduced performance or even safety hazards.

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

- It is not recommended to continue driving your Cadillac with this code present, as it can lead to further damage and potentially unsafe driving conditions. It's best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P1B06 in a Cadillac related to the Drive Motor 2 Control Module High Voltage System Interlock Circuit?

- Proper diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault codes, inspecting the wiring and connectors in the high voltage system, and testing the drive motor control module.

6. What are some repair tips for fixing OBDII code P1B06 in a Cadillac?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the drive motor control module if necessary, and ensuring proper functioning of the interlock circuit.

7. Can I reset OBDII code P1B06 in a Cadillac by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is not a recommended long-term solution as the underlying issue causing the code will still need to be addressed to prevent it from reoccurring.

8. Is it safe to attempt DIY repairs for OBDII code P1B06 in a Cadillac?

- Due to the complexity and safety considerations of working on high voltage systems in hybrid or electric vehicles, it is recommended to seek professional help for diagnosing and repairing this code.

9. How much does it typically cost to repair OBDII code P1B06 in a Cadillac?

- The cost of repairs can vary depending on the specific cause of the code and the extent of the damage. It's best to consult a professional mechanic for an accurate diagnosis and cost estimate.

10. Can OBDII code P1B06 in a Cadillac be prevented?

- While some causes of this code may be unavoidable, regular maintenance and inspections of the vehicle's high voltage system can help detect potential issues early and prevent OBDII code P1B06 from occurring.