AutoCodes – GMC – P0BBA GMC

P0BBA GMC Code - Hybrid/Electric Vehicle Battery 26 Circuit Low 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: P0BBA GMC indicates Hybrid/Electric Vehicle Battery 26 Circuit Low 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 863

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 P0BBA 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 P0BBA GMC - Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage - AutoCodes.com — P0BBA GMC Code - Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0BBA GMC?

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

How to Fix the DTC P0BBA 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 P0BBA 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 P0BBA GMC Code

1. What are common symptoms of OBDII code P0BBA in a GMC hybrid/electric vehicle?

- Common symptoms include reduced vehicle performance, decreased fuel efficiency, and potential issues with the hybrid/electric drivetrain.

2. What are the possible causes of OBDII code P0BBA indicating Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage in a GMC vehicle?

- Possible causes include a faulty hybrid/electric vehicle battery, issues with the battery management system, damaged wiring or connectors, or a malfunctioning battery control module.

3. How can I diagnose the source of OBDII code P0BBA in my GMC hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scan tool to retrieve the code, inspecting the hybrid/electric vehicle battery and related components, and testing the voltage levels within the system.

4. Is it safe to continue driving my GMC hybrid/electric vehicle with OBDII code P0BBA present?

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

5. Can I repair OBDII code P0BBA in my GMC hybrid/electric vehicle myself?

- Repairing this code may require specialized knowledge and tools, so it is advisable to consult a professional mechanic or dealership with experience in hybrid/electric vehicle systems.

6. How much does it typically cost to repair OBDII code P0BBA related to Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage in a GMC vehicle?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve expenses for parts replacement, labor, and diagnostics.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P0BBA in my GMC hybrid/electric vehicle?

- Regularly scheduled maintenance, such as checking the battery health, monitoring system performance, and addressing any warning signs promptly, can help prevent issues leading to this code.

8. Can extreme weather conditions affect the likelihood of OBDII code P0BBA appearing in a GMC hybrid/electric vehicle?

- Yes, extreme temperatures can impact the performance and health of hybrid/electric vehicle batteries, potentially leading to issues like low voltage and triggering this diagnostic trouble code.

9. How long does it typically take to repair OBDII code P0BBA indicating Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage in a GMC vehicle?

- The repair time can vary based on the complexity of the issue, availability of parts, and the expertise of the technician, but it may range from a few hours to a few days.

10. Can resetting the OBDII system clear the P0BBA code in my GMC hybrid/electric vehicle?

- While resetting the system may temporarily clear the code, it is crucial to address the underlying issue causing the code to prevent further problems and ensure the vehicle's proper functioning.