AutoCodes – Chevrolet – P0B61 Chevrolet

P0B61 Chevrolet 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 Chevrolet 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 1,019

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 Chevrolet 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 Chevrolet - Hybrid/Electric Vehicle Battery 8 Circuit High Voltage - AutoCodes.com — P0B61 Chevrolet Code - Hybrid/Electric Vehicle Battery 8 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B61 Chevrolet?

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

How to Fix the DTC P0B61 Chevrolet?

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 Chevrolet 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 Chevrolet Code

What does the OBD-II code P0B61 mean for a Chevrolet vehicle?

Code P0B61 indicates a problem with the high voltage circuit of hybrid or electric vehicle battery #8. It typically refers to an abnormal voltage reading detected by the battery management system.

What are common symptoms of the P0B61 code in a Chevrolet?

Symptoms may include reduced fuel efficiency, limited hybrid or electric functionality, warning lights such as the check engine light, and potential loss of power or drivability.

What causes the P0B61 code to appear in a Chevrolet vehicle?

Common causes include a fault in the hybrid battery pack, issues with the battery wiring or connectors, defective battery management system components, or internal battery cell problems.

Can the P0B61 code affect vehicle performance?

Yes, it can lead to reduced hybrid system performance, limited electric mode functionality, or even cause the vehicle to switch to a backup mode using the internal combustion engine only.

How is the P0B61 code diagnosed?

A mechanic will use a scan tool to confirm the code, check voltage readings from the battery modules, inspect wiring and connectors for damage, and test the battery management system for faults.

Can I clear the P0B61 code without fixing the issue?

Clearing the code without addressing the underlying issue may cause it to reappear and could result in further damage to the vehicle's hybrid or electric system.

How can the P0B61 code be fixed in a Chevrolet?

Repairs may involve replacing the faulty battery module, repairing damaged wiring or connectors, reprogramming the battery management system, or replacing the hybrid battery pack entirely.

Is driving with the P0B61 code safe?

Driving with this code may compromise the vehicle's hybrid or electric performance and could lead to further damage, so itâ€™s recommended to address the issue as soon as possible.

Can a weak hybrid battery cause the P0B61 code?

Yes, a weak or failing hybrid battery can cause abnormal voltage readings, triggering the P0B61 code.

Do I need specialized tools to fix the P0B61 code?

Yes, diagnosing and repairing this code often requires specialized tools, such as an advanced scan tool and equipment for handling high-voltage systems safely.