AutoCodes – Chevrolet – P0BA5 Chevrolet

P0BA5 Chevrolet Code - Hybrid/Electric Vehicle Battery 22 Circuit Performance

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: P0BA5 Chevrolet indicates Hybrid/Electric Vehicle Battery 22 Circuit Performance.
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 1,060

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 P0BA5 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 P0BA5 Chevrolet - Hybrid/Electric Vehicle Battery 22 Circuit Performance - AutoCodes.com — P0BA5 Chevrolet Code - Hybrid/Electric Vehicle Battery 22 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0BA5 Chevrolet?

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

How to Fix the DTC P0BA5 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 P0BA5 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 P0BA5 Chevrolet Code

1. What are the common symptoms of OBDII code P0BA5 in a Chevrolet hybrid/electric vehicle?

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

2. What are the possible causes of OBDII code P0BA5 in a Chevrolet hybrid/electric vehicle?

- The code P0BA5 typically indicates issues with the Hybrid/Electric Vehicle Battery 22 circuit, which can be caused by wiring faults, battery module failures, or issues with the battery control module.

3. How can I diagnose the OBDII code P0BA5 in my Chevrolet hybrid/electric vehicle?

- Diagnosing the code P0BA5 usually involves using a scan tool to retrieve the specific fault codes, inspecting the battery connections and wiring, and performing voltage tests on the battery modules.

4. Can I continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P0BA5 present?

- It is not recommended to continue driving the vehicle with the code P0BA5 present, as it can lead to further damage to the hybrid system and potentially leave you stranded.

5. How can I repair OBDII code P0BA5 in my Chevrolet hybrid/electric vehicle?

- Repairing the code P0BA5 may involve repairing faulty wiring, replacing damaged battery modules, or reprogramming the battery control module. It is recommended to seek professional assistance for proper diagnosis and repair.

6. Are there any maintenance tips to prevent OBDII code P0BA5 in a Chevrolet hybrid/electric vehicle?

- Regularly inspecting the battery connections, keeping the battery modules clean and free of debris, and following the manufacturer's recommended maintenance schedule can help prevent issues that trigger the code P0BA5.

7. Can a DIY enthusiast fix the OBDII code P0BA5 in a Chevrolet hybrid/electric vehicle?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the code P0BA5 in a hybrid/electric vehicle often requires specialized tools and expertise, so it is recommended to consult a professional mechanic.

8. Will resetting the OBDII system clear the P0BA5 code in a Chevrolet hybrid/electric vehicle?

- Resetting the OBDII system may temporarily clear the code P0BA5, but if the underlying issue causing the code is not addressed, it is likely to reoccur. It is important to diagnose and repair the root cause of the code.

9. How long does it typically take to repair OBDII code P0BA5 in a Chevrolet hybrid/electric vehicle?

- The repair time for the code P0BA5 can vary depending on the specific issue causing the code and the availability of parts. It is best to consult with a professional mechanic for a more accurate estimate of repair time.

10. Is the OBDII code P0BA5 specific to Chevrolet hybrid/electric vehicles, or can it occur in other vehicle brands?

- The OBDII code P0BA5 related to Hybrid/Electric Vehicle Battery 22 Circuit Performance is specific to hybrid and electric vehicles, so it is more likely to occur in Chevrolet and other similar vehicle brands with hybrid technology.