AutoCodes – GMC – P0B43 GMC

P0B43 GMC Code - Hybrid/Electric Vehicle Battery 2 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: P0B43 GMC indicates Hybrid/Electric Vehicle Battery 2 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 806

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 P0B43 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 P0B43 GMC - Hybrid/Electric Vehicle Battery 2 Circuit High Voltage - AutoCodes.com — P0B43 GMC Code - Hybrid/Electric Vehicle Battery 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B43 GMC?

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

How to Fix the DTC P0B43 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 P0B43 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 P0B43 GMC Code

1. What are common symptoms of OBDII code P0B43 GMC related to the Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes triggering OBDII code P0B43 GMC for Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- The code may be caused by issues such as a faulty high voltage battery, damaged wiring in the battery circuit, or problems with the battery management system.

3. How serious is OBDII code P0B43 GMC for Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- This code should be addressed promptly as it can impact the performance and safety of the hybrid or electric vehicle. Ignoring the issue may lead to further damage to the high voltage system.

4. Can I continue driving my vehicle with OBDII code P0B43 GMC present?

- It is not recommended to drive the vehicle with this code present, as it can affect the drivability and safety of the vehicle. It's best to have the issue diagnosed and repaired by a qualified technician.

5. What are some basic repair tips for addressing OBDII code P0B43 GMC related to Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- Start by inspecting the high voltage battery connections and wiring for any visible damage. Additionally, checking the battery health and ensuring proper system calibration can help resolve the issue.

6. How can a professional diagnose OBDII code P0B43 GMC for Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- A professional technician can use a scan tool to retrieve the specific trouble codes, conduct voltage tests on the high voltage battery, and perform a thorough inspection of the battery system components.

7. Are there any safety precautions to keep in mind when working on the high voltage system related to OBDII code P0B43 GMC?

- When working on the high voltage system, it is crucial to follow manufacturer's safety guidelines and procedures. Disconnecting the high voltage system properly and wearing appropriate personal protective equipment are essential.

8. Can a DIY enthusiast attempt to fix OBDII code P0B43 GMC for Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- Due to the complex nature of high voltage systems in hybrid and electric vehicles, it is recommended to seek professional help for diagnosing and repairing this code to ensure safety and proper resolution.

9. How much can I expect to pay for repairing OBDII code P0B43 GMC related to Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- Repair costs for this code can vary depending on the underlying issue, parts needed, and labor rates. It's advisable to get estimates from reputable repair shops or dealerships.

10. Will resetting the OBDII code P0B43 GMC clear the issue related to Hybrid/Electric Vehicle Battery 2 Circuit High Voltage?

- Simply clearing the code without addressing the root cause will not fix the problem. It's essential to diagnose and repair the underlying issue triggering the code to ensure proper functioning of the vehicle's high voltage system.