AutoCodes – Generic – P1BA6

P1BA6 Code - Hybrid/Electric Vehicle Battery 65 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: P1BA6 indicates Hybrid/Electric Vehicle Battery 65 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 1,134

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 P1BA6 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 P1BA6 - Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage - AutoCodes.com — P1BA6 Code - Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA6?

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

How to Fix the DTC P1BA6?

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 P1BA6 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

P1BA6 Buick — Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage
P1BA6 Cadillac — Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage
P1BA6 Chevrolet — Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage
P1BA6 GMC — Hybrid/Electric Vehicle Battery 65 Circuit Low Voltage
P1BA6 Saturn — Hybrid/Electric Vehicle Battery 65 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 P1BA6 Code

What does the OBDII code P1BA6 mean?

The P1BA6 code indicates a low voltage condition detected in the hybrid or electric vehicle battery 65 circuit, which can affect the performance of the vehicle's electrical systems.

What are common symptoms of the P1BA6 code?

Symptoms may include warning lights on the dashboard, reduced engine power, decreased fuel efficiency, and potential issues with the hybrid or electric drive system.

What could cause the P1BA6 code to trigger?

Common causes include a failing battery, damaged wiring or connectors in the battery circuit, poor battery connections, or issues with the battery management system.

How can I diagnose the P1BA6 code?

To diagnose the P1BA6 code, check the vehicle's battery voltage, inspect wiring and connectors for damage, and use a diagnostic scanner to read any additional codes that may provide more context.

What repair steps can I take for the P1BA6 code?

Repairs may involve replacing or reconditioning the hybrid battery, repairing damaged wiring or connectors, and ensuring all connections are clean and secure.

Is it safe to drive a vehicle with a P1BA6 code?

It is not recommended to drive a vehicle with a P1BA6 code as it may lead to reduced vehicle performance and could potentially cause further damage to the hybrid or electric systems.

Can the P1BA6 code clear itself?

In some cases, if the underlying issue is resolved, the check engine light may turn off and the code may clear itself after a few driving cycles. However, it's best to address the root cause.

What tools do I need to troubleshoot the P1BA6 code?

You will need an OBD-II scanner to read the codes, a multimeter to check battery voltage, and basic hand tools for inspecting and repairing wiring and connections.

Should I consult a professional mechanic for the P1BA6 code?

Yes, if you're unsure about diagnosing or repairing the issue, it's advisable to consult a professional mechanic, especially given the complexities of hybrid and electric vehicle systems.