AutoCodes – Chevrolet – P0BA4 Chevrolet

P0BA4 Chevrolet 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 Chevrolet 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 868

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

What does this mean?

What are the Possible Causes of the DTC P0BA4 Chevrolet?

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

How to Fix the DTC P0BA4 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 P0BA4 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 P0BA4 Chevrolet Code

1. What are common symptoms of OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include a drop in fuel efficiency, inability to start the vehicle, reduced power, and illuminated warning lights on the dashboard.

2. What causes the OBDII code P0BA4 to trigger in a Chevrolet hybrid/electric vehicle?

- The code P0BA4 is typically triggered by a malfunction in the Hybrid/Electric Vehicle Battery 22 Circuit, such as a faulty battery pack, damaged wiring, or a defective battery control module.

3. How can I diagnose the OBDII code P0BA4 in my Chevrolet hybrid/electric vehicle?

- Diagnosis involves using a scan tool to read the code, checking the battery voltage levels, inspecting the wiring for damage, and testing the battery control module for proper function.

4. Can I drive my Chevrolet hybrid/electric vehicle with the OBDII code P0BA4 present?

- It is not recommended to drive the vehicle with the code P0BA4 present, as it can lead to further damage to the hybrid/electric system and potentially cause safety issues.

5. What are some repair tips for fixing the OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle?

- Repair tips may include replacing the faulty battery pack, repairing damaged wiring, reprogramming the battery control module, or seeking professional assistance from a certified technician.

6. How much does it cost to repair the OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle?

- The cost of repairs can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to get a diagnostic assessment from a qualified technician for an accurate estimate.

7. Are there any safety precautions to take when dealing with the OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle?

- Safety precautions may include disconnecting the high-voltage system, wearing appropriate protective gear, and following manufacturer guidelines for working on hybrid/electric vehicles.

8. Can I reset the OBDII code P0BA4 in my Chevrolet hybrid/electric vehicle using a simple OBDII scanner?

- While you can clear the code temporarily with an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

9. How long does it take to repair the OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle?

- The repair time can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed within a few hours, while others may require more extensive work over several days.

10. Can the OBDII code P0BA4 in a Chevrolet hybrid/electric vehicle be prevented?

- Regular maintenance, such as checking the battery health, inspecting wiring for wear, and following manufacturer recommendations, can help prevent issues that may trigger the code P0BA4 in a Chevrolet hybrid/electric vehicle.