AutoCodes – GMC – P1BA3 GMC

P1BA3 GMC 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 GMC 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 973

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

What does this mean?

What are the Possible Causes of the DTC P1BA3 GMC?

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

How to Fix the DTC P1BA3 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 P1BA3 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 P1BA3 GMC Code

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

- Common symptoms may include poor vehicle performance, reduced fuel efficiency, and warning lights on the dashboard indicating a battery issue.

2. What are the possible causes of OBDII code P1BA3 GMC indicating Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage?

- Potential causes can be a faulty battery pack, damaged battery cells, issues with the battery management system, or problems with the charging system.

3. How can I diagnose the OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage at home?

- You can use an OBDII scanner to read the code and check the battery voltage levels using a multimeter. Visually inspect the battery connections and wiring for any signs of damage.

4. What are some repair tips for addressing OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage?

- Start by checking and tightening all battery connections. Test the battery cells for any issues and consider recalibrating the battery management system. If needed, replace the battery pack.

5. Can driving with OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage cause further damage?

- Driving with this code can potentially worsen the battery's condition and lead to more severe issues over time. It is advisable to address the problem promptly.

6. Is it safe to continue driving my hybrid/electric vehicle with the OBDII code P1BA3 GMC present?

- While it may be possible to drive the vehicle short distances, it is recommended to have the issue diagnosed and repaired as soon as possible to avoid potential damage to the battery system.

7. How much does it typically cost to repair OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage?

- The cost of repair can vary depending on the exact cause of the issue. It may range from a few hundred to a couple of thousand dollars, especially if the battery pack needs replacement.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage?

- While some basic troubleshooting can be done at home, diagnosing and repairing issues related to the hybrid/electric vehicle battery system often require specialized tools and expertise. It is recommended to seek professional help.

9. Will resetting the OBDII code P1BA3 GMC for Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage make the problem go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the low voltage in the battery circuit. The problem should be properly diagnosed and repaired.

10. How can regular maintenance help prevent OBDII code P1BA3 GMC issues in Hybrid/Electric Vehicle Battery 64 Circuit Low Voltage?

- Regularly maintaining your vehicle's battery system, following manufacturer recommendations, and addressing any warning signs promptly can help prevent issues like low voltage in the battery circuit leading to OBDII code P1BA3.