AutoCodes – Cadillac – P0B6B Cadillac

P0B6B Cadillac Code - Hybrid/Electric Vehicle Battery 10 Circuit High Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P0B6B Cadillac indicates Hybrid/Electric Vehicle Battery 10 Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 855

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B6B Cadillac Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P0B6B Cadillac - Hybrid/Electric Vehicle Battery 10 Circuit High Voltage - AutoCodes.com — P0B6B Cadillac Code - Hybrid/Electric Vehicle Battery 10 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B6B Cadillac?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P0B6B 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 P0B6B 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 P0B6B Cadillac Code

1. What are the common symptoms of OBDII code P0B6B in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, illuminated warning lights on the dashboard, and potential difficulty starting the vehicle.

2. What could cause the OBDII code P0B6B Cadillac Hybrid/Electric Vehicle Battery 10 Circuit High Voltage?

- This code is typically triggered by issues with the high-voltage battery system, such as a faulty battery cell, damaged wiring, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P0B6B in my Cadillac Hybrid/Electric Vehicle?

- Diagnosing this code often requires specialized diagnostic tools and expertise. It is recommended to have the vehicle inspected by a certified technician or a dealership familiar with hybrid vehicle systems.

4. Can I still drive my Cadillac with the OBDII code P0B6B present?

- It is not recommended to drive your Cadillac with this code active, as it can lead to further damage to the high-voltage system and potentially unsafe driving conditions.

5. What are some potential repair tips for resolving the OBDII code P0B6B in a Cadillac Hybrid/Electric Vehicle?

- Repairing this code may involve replacing damaged battery components, repairing wiring harnesses, recalibrating the hybrid system, or updating software to address any known issues.

6. Is the OBDII code P0B6B a common issue in Cadillac Hybrid/Electric Vehicles?

- While not extremely common, issues related to high-voltage systems in hybrid and electric vehicles can occur, including triggering the P0B6B trouble code.

7. How much does it typically cost to repair the OBDII code P0B6B in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary significantly depending on the extent of the damage and the specific components that need to be replaced. It is advisable to obtain estimates from reputable repair shops or dealerships.

8. How often should I have the high-voltage battery system in my Cadillac Hybrid/Electric Vehicle inspected?

- Regular maintenance schedules for hybrid and electric vehicles often include inspections of the high-voltage battery system. Refer to your vehicle's manual for specific recommendations.

9. Can I reset the OBDII code P0B6B in my Cadillac Hybrid/Electric Vehicle on my own?

- While it is possible to clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent further problems with the vehicle's high-voltage system.

10. Are there any safety precautions I should take if I suspect an issue with the high-voltage system in my Cadillac Hybrid/Electric Vehicle?

- Yes, it is essential to exercise caution and avoid handling high-voltage components unless you are a trained professional. Always consult with a qualified technician for any repairs involving the high-voltage system.