AutoCodes – Chevrolet – P1B84 Chevrolet

P1B84 Chevrolet Code - Hybrid/Electric Vehicle Battery 54 Circuit Performance

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: P1B84 Chevrolet indicates Hybrid/Electric Vehicle Battery 54 Circuit Performance.
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 1,011

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B84 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 P1B84 Chevrolet - Hybrid/Electric Vehicle Battery 54 Circuit Performance - AutoCodes.com — P1B84 Chevrolet Code - Hybrid/Electric Vehicle Battery 54 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B84 Chevrolet?

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

How to Fix the DTC P1B84 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 P1B84 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 P1B84 Chevrolet Code

1. What are common symptoms of OBDII code P1B84 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced electric vehicle range, poor fuel efficiency, and potential hybrid system malfunctions.

2. What does the OBDII code P1B84 Chevrolet indicate?

- The code P1B84 indicates Hybrid/Electric Vehicle Battery 54 Circuit Performance issue in a Chevrolet vehicle.

3. What are possible causes of the OBDII code P1B84 in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty battery 54 module, wiring issues in the battery circuit, or problems with the battery cooling system.

4. How can I diagnose the OBDII code P1B84 in my Chevrolet hybrid/electric vehicle?

- Diagnosing the code may require using a diagnostic scan tool to assess the hybrid battery system, checking the battery connections, and inspecting the wiring for any damage.

5. Can I continue driving my Chevrolet with the OBDII code P1B84 present?

- It is not recommended to continue driving with the code present as it can lead to further damage to the hybrid/electric system and potentially affect vehicle performance.

6. How can I reset the OBDII code P1B84 in my Chevrolet hybrid/electric vehicle?

- Resetting the code can be done using a diagnostic scan tool to clear the code after addressing the underlying issue with the Hybrid/Electric Vehicle Battery 54 Circuit Performance.

7. Is it safe to attempt repairs for the OBDII code P1B84 on my own?

- Due to the complexity of hybrid/electric vehicle systems, it is recommended to seek professional help or consult a certified technician for repairs related to the code P1B84.

8. What are the potential repair solutions for the OBDII code P1B84 in a Chevrolet vehicle?

- Repair solutions may include replacing the faulty battery module, repairing damaged wiring, or addressing issues with the battery cooling system to resolve the Hybrid/Electric Vehicle Battery 54 Circuit Performance problem.

9. Can a weak or failing hybrid/electric vehicle battery cause the OBDII code P1B84 to appear?

- Yes, a weak or failing hybrid/electric vehicle battery can contribute to the appearance of the code P1B84 due to issues with the battery 54 circuit performance.

10. How often should I have the hybrid/electric vehicle battery system inspected to prevent the OBDII code P1B84 from occurring?

- It is recommended to have the hybrid/electric vehicle battery system inspected regularly as part of routine maintenance to prevent issues like the code P1B84 from occurring.