AutoCodes – Generic – P1BA0

P1BA0 Code - Hybrid/Electric Vehicle Battery 63 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: P1BA0 indicates Hybrid/Electric Vehicle Battery 63 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 932

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 P1BA0 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 P1BA0 - Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage - AutoCodes.com — P1BA0 Code - Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA0?

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

How to Fix the DTC P1BA0?

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 P1BA0 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.

Need more information about the P1BA0 code?

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Need Help with the Code?

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Information for Specific Makes

P1BA0 Buick — Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage
P1BA0 Cadillac — Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage
P1BA0 Chevrolet — Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage
P1BA0 GMC — Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage
P1BA0 Saturn — Hybrid/Electric Vehicle Battery 63 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 P1BA0 Code

What does the OBDII code P1BA0 mean?

The code P1BA0 indicates that the hybrid or electric vehicle battery's 63 circuit is experiencing low voltage, which can lead to performance issues.

What are common symptoms of a P1BA0 code?

Common symptoms may include reduced acceleration, poor fuel economy, warning lights on the dashboard, and increased engine noise.

What can cause the P1BA0 code to trigger?

Causes can include a weak or failing battery, poor connections in the battery circuit, damaged wiring, or issues with the battery management system.

How can I diagnose the P1BA0 code?

To diagnose P1BA0, use an OBDII scanner to read the code, visually inspect the battery connections and wiring, and check the battery's voltage and health.

Is it safe to drive with a P1BA0 code?

While it may be safe to drive short distances, it is advisable to have the issue checked promptly, as it can affect vehicle performance and efficiency.

What repair options are available for a P1BA0 code?

Repair options may include replacing or reconditioning the battery, fixing or replacing damaged wiring or connectors, and resetting the battery management system.

How can I prevent a P1BA0 code from occurring?

Regular maintenance of the hybrid or electric vehicleâ€™s battery, ensuring proper connections, and monitoring battery health can help prevent this code from appearing.

Should I reset the code after repairs?

Yes, after performing repairs, it is recommended to clear the code using an OBDII scanner to see if it returns. If it does, further diagnosis may be needed.

Can a low battery affect my vehicleâ€™s charging system?

Yes, a low battery can impact the charging system's ability to maintain battery voltage, potentially leading to further issues with the vehicle's electrical system.