AutoCodes – Generic – P1BA3

P1BA3 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 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 1,920

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 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 - Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage - AutoCodes.com — P1BA3 Code - Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA3?

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

How to Fix the DTC P1BA3?

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 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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Need Help with the Code?

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Information for Specific Makes

P1BA3 Buick — Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage
P1BA3 Cadillac — Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage
P1BA3 Chevrolet — Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage
P1BA3 GMC — Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage
P1BA3 Saturn — Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage

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 Code

1. What are the common symptoms of OBDII code P1BA3 (Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage)?

- Common symptoms include reduced electric vehicle range, difficulty starting the vehicle, and illuminated warning lights on the dashboard related to the battery system.

2. What are the possible causes of OBDII code P1BA3?

- Possible causes include a faulty battery pack, damaged battery cells, poor electrical connections, or issues with the battery management system in a hybrid or electric vehicle.

3. How can I diagnose the underlying issue triggering code P1BA3?

- Diagnosing the issue may require using a diagnostic scanner to read the code, performing voltage tests on the battery pack, inspecting electrical connections, and checking the health of individual battery cells.

4. Can I continue driving my vehicle with OBDII code P1BA3 present?

- It is not recommended to continue driving the vehicle with code P1BA3 present, as it can lead to further damage to the battery system and potentially affect the drivability of the vehicle.

5. How can I repair OBDII code P1BA3 at home?

- Repairing code P1BA3 may involve checking and cleaning electrical connections, inspecting the battery pack for visible damage, and resetting the fault code with a diagnostic scanner. However, complex battery repairs may require professional assistance.

6. Is it safe to reset the OBDII code P1BA3 using a diagnostic scanner?

- Resetting the fault code with a diagnostic scanner is safe as a temporary measure to clear the warning light. However, it is crucial to address the underlying issue triggering the code to prevent further problems.

7. What are the potential risks of ignoring OBDII code P1BA3?

- Ignoring code P1BA3 can lead to reduced performance, increased battery deterioration, and potential safety hazards due to the compromised electrical system in the hybrid or electric vehicle.

8. How much does it typically cost to repair OBDII code P1BA3 at a professional repair shop?

- The cost of repairing code P1BA3 can vary depending on the extent of the issue, the need for parts replacement, and labor costs. It is advisable to obtain quotes from reputable repair shops for an accurate estimate.

9. Can extreme weather conditions affect the likelihood of triggering code P1BA3 in a hybrid or electric vehicle?

- Yes, extreme weather conditions such as extreme cold or heat can impact the performance and health of the battery system, potentially increasing the likelihood of triggering code P1BA3.

10. Are there any preventive maintenance tips to help avoid encountering OBDII code P1BA3 in a hybrid or electric vehicle?

- Regularly scheduled maintenance, monitoring the battery health, avoiding deep discharges, and keeping the electrical system clean and free of corrosion can help prevent issues that may trigger code P1BA3.