AutoCodes – GMC – P0B84 GMC

P0B84 GMC 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 GMC 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 999

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

What does this mean?

What are the Possible Causes of the DTC P0B84 GMC?

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

How to Fix the DTC P0B84 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 P0B84 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 P0B84 GMC Code

1. What are the common symptoms of OBDII code P0B84 GMC related to the Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- Common symptoms may include reduced hybrid system performance, decreased fuel efficiency, and possible illumination of the hybrid system warning light.

2. What are the possible causes of OBDII code P0B84 GMC indicating Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- The code could be triggered by issues such as a faulty high voltage battery pack, damaged wiring in the high voltage circuit, or a problem with the battery management system.

3. How can I diagnose the cause of OBDII code P0B84 GMC related to Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific details of the fault, inspecting the high voltage battery pack and associated wiring for damage, and testing the battery management system components.

4. Can I continue driving my vehicle with OBDII code P0B84 GMC indicating Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid system components and potentially unsafe driving conditions.

5. How can I reset OBDII code P0B84 GMC for the Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- Resetting the code typically involves using a diagnostic scanner to clear the code after addressing and repairing the underlying issue causing the fault.

6. What are the repair options for OBDII code P0B84 GMC related to Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- Repair options may include replacing the high voltage battery pack, repairing damaged wiring, recalibrating the battery management system, or seeking assistance from a qualified hybrid/electric vehicle technician.

7. Is it safe to attempt to repair OBDII code P0B84 GMC indicating Hybrid/Electric Vehicle Battery 15 Circuit High Voltage on my own?

- Due to the high voltage nature of the components involved, it is recommended to seek professional help or consult the vehicle's service manual before attempting any repairs on the high voltage system.

8. How can I prevent OBDII code P0B84 GMC related to Hybrid/Electric Vehicle Battery 15 Circuit High Voltage from recurring?

- Regular maintenance of the hybrid system components, timely addressing any warning lights or symptoms, and following the manufacturer's recommended service schedule can help prevent the recurrence of this code.

9. Are there any safety precautions to keep in mind when dealing with OBDII code P0B84 GMC for the Hybrid/Electric Vehicle Battery 15 Circuit High Voltage?

- It is crucial to always work with high voltage systems with caution, wear appropriate personal protective equipment, and follow the safety procedures outlined in the vehicle's service manual.

10. Can OBDII code P0B84 GMC indicating Hybrid/Electric Vehicle Battery 15 Circuit High Voltage affect the overall performance of my vehicle?

- Yes, this code can negatively impact the performance and efficiency of the hybrid/electric vehicle by disrupting the high voltage system operation and potentially compromising the vehicle's overall functionality.