AutoCodes – GMC – P0B61 GMC

P0B61 GMC Code - Hybrid/Electric Vehicle Battery 8 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: P0B61 GMC indicates Hybrid/Electric Vehicle Battery 8 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 985

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B61 GMC 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 P0B61 GMC - Hybrid/Electric Vehicle Battery 8 Circuit High Voltage - AutoCodes.com — P0B61 GMC Code - Hybrid/Electric Vehicle Battery 8 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B61 GMC?

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

How to Fix the DTC P0B61 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 P0B61 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 P0B61 GMC Code

1. What are common symptoms of OBDII code P0B61 in a GMC hybrid/electric vehicle?

- Common symptoms include reduced hybrid system performance, check engine light illumination, and potential issues with battery charging.

2. What can cause the OBDII code P0B61 in a GMC hybrid/electric vehicle?

- This code is typically triggered by a high voltage condition in the 8th battery circuit of the hybrid/electric vehicle, often caused by a fault in the battery module or related components.

3. How can I diagnose the OBDII code P0B61 in my GMC hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the high voltage battery system for any visible damage or loose connections, and testing the battery modules for proper function.

4. Can I still drive my GMC hybrid/electric vehicle with the OBDII code P0B61 present?

- It is not recommended to drive the vehicle with this code as it may lead to further damage to the high voltage system and potentially compromise the safety of the vehicle.

5. What are some repair options for addressing the OBDII code P0B61 in a GMC hybrid/electric vehicle?

- Repair options may include replacing the faulty battery module, repairing damaged wiring or connectors, resetting the code, and performing a thorough inspection of the high voltage system.

6. Is it safe to attempt any repairs related to the OBDII code P0B61 in a GMC hybrid/electric vehicle without proper training?

- Due to the high voltage nature of the system, it is recommended to seek professional assistance or specialized training before attempting any repairs related to this code.

7. How can I prevent the recurrence of the OBDII code P0B61 in my GMC hybrid/electric vehicle?

- Regular maintenance of the high voltage battery system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the recurrence of this code.

8. Are there any safety precautions I should take when working on a GMC hybrid/electric vehicle with the OBDII code P0B61?

- Safety precautions include wearing appropriate personal protective equipment, disconnecting the high voltage system before starting any repairs, and following manufacturer guidelines for handling high voltage components.

9. Can the OBDII code P0B61 be a false alarm in a GMC hybrid/electric vehicle?

- While rare, false alarms can occur with this code. It is recommended to verify the code and associated symptoms through proper diagnosis before proceeding with any repairs.

10. How long does it typically take to repair the OBDII code P0B61 in a GMC hybrid/electric vehicle?

- The repair time can vary depending on the extent of the issue, availability of parts, and the expertise of the technician. It is best to consult with a professional for an accurate estimate.