AutoCodes – Chevrolet – P1BA3 Chevrolet

P1BA3 Chevrolet Code - Hybrid/Electric Vehicle Battery 64 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: P1BA3 Chevrolet indicates Hybrid/Electric Vehicle Battery 64 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 906

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BA3 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 P1BA3 Chevrolet - Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage - AutoCodes.com — P1BA3 Chevrolet Code - Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA3 Chevrolet?

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

How to Fix the DTC P1BA3 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 P1BA3 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 P1BA3 Chevrolet Code

1. What does the OBDII code P1BA3 mean on a Chevrolet?

P1BA3 indicates a low voltage issue in the Hybrid/Electric Vehicle Battery 64 Circuit, typically related to the battery management system.

2. What are the common symptoms of the P1BA3 code on a Chevrolet?

Symptoms include reduced hybrid or electric performance, a check engine light, limited acceleration, or the vehicle staying in gasoline-only mode.

3. What causes the P1BA3 code on a Chevrolet hybrid or electric vehicle?

Common causes include a faulty battery module, corroded or damaged wiring, issues with the battery control module, or degraded battery cells.

4. Can I drive my Chevrolet with a P1BA3 code?

Driving with this code is not recommended, as it may lead to further battery damage or reduced vehicle performance and efficiency.

5. How is the P1BA3 code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the battery circuit for wiring or connection issues, and test the battery control module and individual battery cells.

6. How can I fix the P1BA3 code on a Chevrolet?

Repairs may include replacing damaged wiring, repairing connections, replacing a failing battery module, or reprogramming the battery control module.

7. How much does it cost to repair the P1BA3 code on a Chevrolet?

The cost varies depending on the issue but can range from $200 for wiring repairs to over $1,000 for battery module replacement.

8. Can a low 12V battery trigger the P1BA3 code?

No, this code specifically relates to the high-voltage hybrid/electric battery and its circuits, not the 12V auxiliary battery.

9. Will resetting the code fix the P1BA3 issue on my Chevrolet?

Simply resetting the code wonâ€™t fix the underlying issue. Proper diagnosis and repair of the low-voltage circuit problem are necessary.

10. What tools are needed to troubleshoot the P1BA3 code?

Diagnosing this code typically requires an advanced scan tool capable of reading hybrid/electric system data, a multimeter for voltage testing, and possibly a battery cell tester.