AutoCodes – Chevrolet – P0B84 Chevrolet

P0B84 Chevrolet Code - Hybrid/Electric Vehicle Battery 15 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: P0B84 Chevrolet indicates Hybrid/Electric Vehicle Battery 15 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 929

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 P0B84 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 P0B84 Chevrolet - Hybrid/Electric Vehicle Battery 15 Circuit High Voltage - AutoCodes.com — P0B84 Chevrolet Code - Hybrid/Electric Vehicle Battery 15 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B84 Chevrolet?

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

How to Fix the DTC P0B84 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 P0B84 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 P0B84 Chevrolet Code

1. What are the common symptoms of OBDII code P0B84 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the Check Engine light illuminating, reduced vehicle performance, and potential issues with the hybrid/electric battery system.

2. What does the OBDII code P0B84 indicate in a Chevrolet hybrid/electric vehicle?

- The code P0B84 indicates a high voltage condition in the Hybrid/Electric Vehicle Battery 15 Circuit.

3. What are the possible causes of OBDII code P0B84 in a Chevrolet hybrid/electric vehicle?

- Possible causes of this code include a faulty battery management system, a malfunctioning high-voltage circuit, wiring issues, or a defective battery pack.

4. How can I diagnose the OBDII code P0B84 in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the hybrid/electric battery system for any visible damage, and testing the circuit components for proper function.

5. Is it safe to drive my Chevrolet hybrid/electric vehicle with the OBDII code P0B84 present?

- It is recommended to avoid driving the vehicle with this code present, as it can lead to further damage to the battery system and potentially unsafe driving conditions.

6. Can I repair the OBDII code P0B84 in my Chevrolet hybrid/electric vehicle myself?

- Repairing this code may require specialized knowledge and tools, so it is recommended to seek assistance from a qualified technician or dealership familiar with hybrid/electric vehicle systems.

7. How much does it typically cost to repair OBDII code P0B84 in a Chevrolet hybrid/electric vehicle?

- The cost of repair can vary depending on the exact cause of the code, but it may involve replacing components in the battery system, which can range from a few hundred to a few thousand dollars.

8. Are there any maintenance tips to prevent OBDII code P0B84 from recurring in my Chevrolet hybrid/electric vehicle?

- Regularly inspecting and maintaining the hybrid/electric battery system, following manufacturer-recommended service intervals, and avoiding overcharging the battery can help prevent this code from recurring.

9. Can OBDII code P0B84 cause damage to other components in my Chevrolet hybrid/electric vehicle?

- If left unresolved, the high voltage condition indicated by this code can potentially cause damage to other electrical components in the vehicle, leading to more extensive repairs.

10. How long does it typically take to repair OBDII code P0B84 in a Chevrolet hybrid/electric vehicle?

- The repair time for this code can vary depending on the complexity of the issue and availability of parts, but it may take several hours to a full day to diagnose and repair the problem.