AutoCodes – Chevrolet – P1BA1 Chevrolet

P1BA1 Chevrolet Code - Hybrid/Electric Vehicle Battery 63 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: P1BA1 Chevrolet indicates Hybrid/Electric Vehicle Battery 63 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 982

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 P1BA1 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 P1BA1 Chevrolet - Hybrid/Electric Vehicle Battery 63 Circuit High Voltage - AutoCodes.com — P1BA1 Chevrolet Code - Hybrid/Electric Vehicle Battery 63 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA1 Chevrolet?

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

How to Fix the DTC P1BA1 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 P1BA1 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 P1BA1 Chevrolet Code

1. What are the common symptoms of OBDII code P1BA1 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light illuminating, reduced fuel efficiency, and potential drivability issues.

2. What does the OBDII code P1BA1 Chevrolet Hybrid/Electric Vehicle Battery 63 Circuit High Voltage indicate?

- This code indicates a high voltage condition in the battery 63 circuit of a Chevrolet hybrid/electric vehicle, which may be related to an electrical issue.

3. What are the possible causes of the OBDII code P1BA1 in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty high-voltage battery, issues with the battery management system, a wiring problem in the battery circuit, or a software glitch.

4. Can driving with the OBDII code P1BA1 present cause further damage to the vehicle?

- Driving with this code present can potentially cause damage to the high-voltage system components and should be addressed promptly to avoid further issues.

5. How can I diagnose the OBDII code P1BA1 in my Chevrolet hybrid/electric vehicle?

- Diagnosing this code typically requires specialized diagnostic equipment and expertise, so it's recommended to have the vehicle inspected by a qualified technician.

6. Is it safe to continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P1BA1?

- It is not recommended to continue driving the vehicle with this code present, as it can indicate a serious issue with the high-voltage system that may impact vehicle safety.

7. What are some repair tips for addressing the OBDII code P1BA1 in a Chevrolet hybrid/electric vehicle?

- Repair tips may include checking the high-voltage battery connections, inspecting the battery management system, and ensuring all wiring in the battery circuit is intact.

8. Can I reset the OBDII code P1BA1 in my Chevrolet hybrid/electric vehicle on my own?

- While you can clear the code using an OBDII scanner, it's important to address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it typically cost to repair the OBDII code P1BA1 in a Chevrolet hybrid/electric vehicle?

- Repair costs can vary depending on the specific cause of the code, but they may range from a few hundred to a few thousand dollars, especially if high-voltage system components need to be replaced.

10. Will the OBDII code P1BA1 in a Chevrolet hybrid/electric vehicle affect the vehicle's performance?

- Yes, this code can affect the vehicle's performance by triggering reduced power modes or other drivability issues to protect the high-voltage system from further damage.