AutoCodes – Chevrolet – P0BA2 Chevrolet

P0BA2 Chevrolet Code - Hybrid/Electric Vehicle Battery 21 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: P0BA2 Chevrolet indicates Hybrid/Electric Vehicle Battery 21 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 875

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 P0BA2 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 P0BA2 Chevrolet - Hybrid/Electric Vehicle Battery 21 Circuit High Voltage - AutoCodes.com — P0BA2 Chevrolet Code - Hybrid/Electric Vehicle Battery 21 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0BA2 Chevrolet?

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

How to Fix the DTC P0BA2 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 P0BA2 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 P0BA2 Chevrolet Code

1. What does OBDII code P0BA2 for a Chevrolet Hybrid/Electric Vehicle indicate?

The code P0BA2 indicates a "Hybrid/Electric Vehicle Battery 21 Circuit High Voltage" issue in a Chevrolet hybrid or electric vehicle.

2. What are the common symptoms of OBDII code P0BA2 in a Chevrolet Hybrid/Electric Vehicle?

Common symptoms of code P0BA2 may include Check Engine Light illumination, poor vehicle performance, and potential issues with the hybrid/electric powertrain.

3. What are the possible causes of OBDII code P0BA2 in a Chevrolet Hybrid/Electric Vehicle?

Causes of code P0BA2 can include a faulty high voltage battery, damaged wiring or connectors in the high voltage circuit, or issues with the battery management system.

4. How can I diagnose the OBDII code P0BA2 in my Chevrolet Hybrid/Electric Vehicle?

Proper diagnosis of code P0BA2 requires specialized equipment and knowledge of high voltage systems. It is recommended to seek assistance from a qualified technician or hybrid/electric vehicle specialist.

5. Can I continue driving my Chevrolet Hybrid/Electric Vehicle with OBDII code P0BA2 present?

It is not recommended to drive the vehicle with code P0BA2 present, as it can indicate potentially dangerous high voltage issues that may affect the safety and performance of the vehicle.

6. What are some repair tips for addressing OBDII code P0BA2 in a Chevrolet Hybrid/Electric Vehicle?

Repairing code P0BA2 may involve inspecting and repairing the high voltage battery circuit, checking and replacing damaged wiring or connectors, and resetting the fault code with a diagnostic tool.

7. Is it safe to attempt DIY repairs for OBDII code P0BA2 in a Chevrolet Hybrid/Electric Vehicle?

Due to the high voltage nature of the components involved, DIY repairs for code P0BA2 are not recommended. It is best to seek professional help to ensure safety and proper repair procedures.

8. Are there any recalls or technical service bulletins related to OBDII code P0BA2 in Chevrolet Hybrid/Electric Vehicles?

It is advisable to check with Chevrolet dealerships or official sources for any recalls or technical service bulletins related to code P0BA2, as manufacturers may provide specific guidance or assistance for such issues.

9. What is the typical cost of repairing OBDII code P0BA2 in a Chevrolet Hybrid/Electric Vehicle?

Repair costs for code P0BA2 can vary depending on the specific issue, parts needed, and labor involved. It is recommended to obtain quotes from reputable service centers or dealerships for an accurate estimate.

10. How can I prevent OBDII code P0BA2 from recurring in my Chevrolet Hybrid/Electric Vehicle?

Regular maintenance, timely inspections of the high voltage system, and addressing any related warning signs promptly can help prevent the recurrence of code P0BA2 in a Chevrolet hybrid/electric vehicle.