AutoCodes – GMC – P0BA4 GMC

P0BA4 GMC Code - Hybrid/Electric Vehicle Battery 22 Circuit

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: P0BA4 GMC indicates Hybrid/Electric Vehicle Battery 22 Circuit.
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 929

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 P0BA4 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 P0BA4 GMC - Hybrid/Electric Vehicle Battery 22 Circuit - AutoCodes.com — P0BA4 GMC Code - Hybrid/Electric Vehicle Battery 22 Circuit

What does this mean?

What are the Possible Causes of the DTC P0BA4 GMC?

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

How to Fix the DTC P0BA4 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 P0BA4 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 P0BA4 GMC Code

1. What are common symptoms of OBDII code P0BA4 in a GMC Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential inability to start the vehicle.

2. What does OBDII code P0BA4 indicate in a GMC Hybrid/Electric Vehicle?

- OBDII code P0BA4 specifically refers to an issue with the Hybrid/Electric Vehicle Battery 22 Circuit.

3. What are the possible causes of OBDII code P0BA4 in a GMC Hybrid/Electric Vehicle?

- Possible causes include a faulty battery pack, damaged wiring in the battery circuit, or issues with the battery management system.

4. How can I diagnose the OBDII code P0BA4 in my GMC Hybrid/Electric Vehicle?

- Diagnosing this code typically involves using a scan tool to check for specific battery circuit faults and inspecting the battery pack and associated wiring for damage.

5. Can I still drive my GMC Hybrid/Electric Vehicle with OBDII code P0BA4 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid system components.

6. How can I repair OBDII code P0BA4 in my GMC Hybrid/Electric Vehicle?

- Repairing this code may involve replacing the battery pack, repairing damaged wiring, or recalibrating the battery management system as needed.

7. Is it possible to clear OBDII code P0BA4 in my GMC Hybrid/Electric Vehicle without fixing the issue?

- Clearing the code without addressing the underlying problem is not recommended, as the issue can worsen over time and potentially lead to more costly repairs.

8. Can a DIY enthusiast fix OBDII code P0BA4 in a GMC Hybrid/Electric Vehicle?

- While some basic troubleshooting can be done by enthusiasts, diagnosing and repairing this code often requires specialized tools and expertise, so it's best to consult a professional.

9. How much does it typically cost to repair OBDII code P0BA4 in a GMC Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

10. How often does OBDII code P0BA4 occur in GMC Hybrid/Electric Vehicles?

- While not extremely common, this code can occur in GMC Hybrid/Electric Vehicles due to various factors affecting the battery circuit.