AutoCodes – GMC – P0B89 GMC

P0B89 GMC Code - Hybrid/Electric Vehicle Battery 16 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: P0B89 GMC indicates Hybrid/Electric Vehicle Battery 16 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 1,011

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B89 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 P0B89 GMC - Hybrid/Electric Vehicle Battery 16 Circuit High Voltage - AutoCodes.com — P0B89 GMC Code - Hybrid/Electric Vehicle Battery 16 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B89 GMC?

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

How to Fix the DTC P0B89 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 P0B89 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 P0B89 GMC Code

1. What are the common symptoms of OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- The common symptoms include reduced fuel efficiency, poor vehicle performance, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0B89 indicating Hybrid/Electric Vehicle Battery 16 Circuit High Voltage in a GMC vehicle?

- The code may be triggered by issues such as a faulty high voltage battery pack, damaged battery circuitry, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P0B89 on my GMC Hybrid/Electric Vehicle?

- To diagnose the code, it is recommended to use an OBDII scanner to retrieve the specific fault code and then perform a thorough inspection of the high voltage battery system.

4. Can I continue driving my GMC Hybrid/Electric Vehicle with the OBDII code P0B89 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the high voltage battery system and compromise vehicle safety.

5. What are some repair tips for addressing OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing any damaged wiring or connections, replacing a faulty high voltage battery pack, or recalibrating the battery management system.

6. Is it safe to attempt DIY repairs for OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- Due to the high voltage nature of the components involved, it is recommended to seek professional help or consult with a certified technician for repairs related to the high voltage battery system.

7. How much does it typically cost to repair OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific issue causing the code, but they can range from a few hundred dollars for minor repairs to over a thousand dollars for more complex problems.

8. Will resetting the OBDII code P0B89 clear the issue in a GMC Hybrid/Electric Vehicle?

- Simply resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing the fault code to appear.

9. Are there any preventive maintenance steps to avoid OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- Regularly inspecting the high voltage battery system, following manufacturer's maintenance guidelines, and addressing any warning signs promptly can help prevent the occurrence of this fault code.

10. How long does it typically take to repair OBDII code P0B89 in a GMC Hybrid/Electric Vehicle?

- The repair time can vary depending on the complexity of the issue, availability of parts, and the technician's expertise, but it may take anywhere from a few hours to a full day to address the problem.