AutoCodes – Chevrolet – P1BA2 Chevrolet

P1BA2 Chevrolet Code - Hybrid/Electric Vehicle Battery 64 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: P1BA2 Chevrolet indicates Hybrid/Electric Vehicle Battery 64 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 865

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 P1BA2 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 P1BA2 Chevrolet - Hybrid/Electric Vehicle Battery 64 Circuit Performance - AutoCodes.com — P1BA2 Chevrolet Code - Hybrid/Electric Vehicle Battery 64 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BA2 Chevrolet?

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

How to Fix the DTC P1BA2 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 P1BA2 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 P1BA2 Chevrolet Code

1. What are the common symptoms of OBDII code P1BA2 in a Chevrolet Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid battery performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What can cause the OBDII code P1BA2 to trigger in a Chevrolet Hybrid/Electric Vehicle?

- This code is usually triggered by issues such as a faulty battery pack, damaged wiring harness, poor electrical connections, or internal battery cell degradation.

3. How can I diagnose the OBDII code P1BA2 in my Chevrolet Hybrid/Electric Vehicle?

- Diagnosis typically involves conducting a thorough inspection of the hybrid battery system, checking for any visible damage, testing the battery cells, and analyzing the wiring connections.

4. What are the recommended repair options for addressing code P1BA2 in a Chevrolet Hybrid/Electric Vehicle?

- Repair options may include replacing the hybrid battery pack, repairing damaged wiring, cleaning electrical connections, or recalibrating the battery management system.

5. Can I continue driving my Chevrolet Hybrid/Electric Vehicle with the P1BA2 code present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid system and potentially affect the vehicle's performance and safety.

6. How much does it typically cost to repair the P1BA2 code in a Chevrolet Hybrid/Electric Vehicle?

- The cost of repairs can vary depending on the extent of the issue, but it may range from a few hundred dollars for minor repairs to over a thousand dollars for more significant battery pack replacements.

7. Are there any preventative maintenance tips to avoid the P1BA2 code in a Chevrolet Hybrid/Electric Vehicle?

- Regularly inspecting and maintaining the hybrid battery system, ensuring proper charging habits, and following the manufacturer's recommended maintenance schedule can help prevent issues leading to this code.

8. Can a DIY enthusiast address the P1BA2 code in a Chevrolet Hybrid/Electric Vehicle?

- While some basic inspections and maintenance tasks can be performed by experienced DIY enthusiasts, diagnosing and repairing complex hybrid system issues related to this code may require specialized knowledge and equipment best left to professionals.

9. How long does it usually take to repair the P1BA2 code in a Chevrolet Hybrid/Electric Vehicle?

- Repair times can vary depending on the specific issue and repair process required, but it may take anywhere from a few hours to a full day or more to address the P1BA2 code effectively.

10. Is it necessary to reset the OBDII system after repairing the P1BA2 code in a Chevrolet Hybrid/Electric Vehicle?

- Yes, it is recommended to reset the OBDII system after completing repairs to clear the code and ensure proper monitoring of the system for any recurring issues.