AutoCodes – GMC – P1BA2 GMC

P1BA2 GMC 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 GMC 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 848

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

What does this mean?

What are the Possible Causes of the DTC P1BA2 GMC?

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

How to Fix the DTC P1BA2 GMC?

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 GMC 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 GMC Code

What does the OBDII code P1BA2 mean?

The OBDII code P1BA2 indicates a performance issue with the Hybrid/Electric Vehicle Battery 64 circuit, which can affect the vehicle's power delivery and efficiency.

What are the common symptoms of a P1BA2 code?

Common symptoms include reduced engine performance, warning lights on the dashboard, and potential issues with the vehicle's hybrid or electric drive system.

What could cause the P1BA2 code to trigger?

Causes may include a faulty battery control module, poor electrical connections, damaged wiring, or a malfunctioning hybrid battery pack.

How can I diagnose a P1BA2 code?

Start by using a scan tool to confirm the code and check for related codes. Inspect the battery connections, wiring, and the condition of the hybrid battery.

What are some repair tips for fixing a P1BA2 code?

Repair tips include checking and cleaning electrical connections, replacing damaged wiring, and testing or replacing the battery control module if necessary.

Can driving with a P1BA2 code cause further damage to my vehicle?

Yes, continuing to drive with this code can lead to decreased performance and may cause additional strain on the hybrid/electric system, potentially leading to more severe issues.

Is it safe to drive my vehicle with a P1BA2 code?

While it may be safe for short distances, it is advisable to have the issue diagnosed and repaired promptly to avoid potential breakdowns or further damage.

Will clearing the code P1BA2 fix the problem?

Clearing the code may temporarily turn off the warning light, but it will not fix the underlying issue. Proper diagnosis and repair are necessary for a permanent solution.

How much does it typically cost to repair a P1BA2 code?

Repair costs can vary widely depending on the specific cause, ranging from simple electrical repairs to more expensive battery replacements or module repairs. Always get a detailed estimate before proceeding.