AutoCodes – GMC – P1BA4 GMC

P1BA4 GMC Code - Hybrid/Electric Vehicle Battery 64 Circuit High 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: P1BA4 GMC indicates Hybrid/Electric Vehicle Battery 64 Circuit High 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 876

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 P1BA4 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 P1BA4 GMC - Hybrid/Electric Vehicle Battery 64 Circuit High Voltage - AutoCodes.com — P1BA4 GMC Code - Hybrid/Electric Vehicle Battery 64 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA4 GMC?

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

How to Fix the DTC P1BA4 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 P1BA4 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 P1BA4 GMC Code

1. What are the common symptoms of OBDII code P1BA4 GMC related to the Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Common symptoms include reduced hybrid/electric vehicle performance, illuminated check engine light, and potential loss of power.

2. What are the possible causes of OBDII code P1BA4 GMC indicating Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Possible causes include a faulty high voltage battery pack, damaged battery cables, a malfunctioning battery management system, or issues with the hybrid/electric vehicle's charging system.

3. How can I diagnose the OBDII code P1BA4 GMC for Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Diagnosis typically involves using a professional OBDII scanner to read and interpret the code, followed by a thorough inspection of the high voltage battery components, cables, and related systems.

4. Is it safe to drive with OBDII code P1BA4 GMC triggered for Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- It is not recommended to drive with this code triggered, as it can lead to further damage to the hybrid/electric vehicle's high voltage system and potentially compromise safety.

5. How can I clear OBDII code P1BA4 GMC related to Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Clearing the code typically involves using an OBDII scanner to reset the system after addressing the underlying issue causing the fault code.

6. Are there any DIY repair tips for fixing OBDII code P1BA4 GMC for Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Due to the complexity and high voltage nature of the hybrid/electric vehicle system, it is recommended to have a professional technician diagnose and repair the issue.

7. What are the potential consequences of ignoring OBDII code P1BA4 GMC for Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Ignoring this code can lead to further damage to the high voltage system, decreased performance, reduced fuel efficiency, and potential safety hazards.

8. How long does it typically take to repair OBDII code P1BA4 GMC indicating Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- Repair time can vary depending on the exact cause of the issue, but it may involve several hours to a full day of work to diagnose and fix the problem properly.

9. Can OBDII code P1BA4 GMC be a false alarm for issues related to Hybrid/Electric Vehicle Battery 64 Circuit High Voltage?

- While false alarms are possible, it is crucial to have the system thoroughly inspected by a qualified technician to rule out any actual underlying problems with the high voltage system.

10. Is there a warranty or recall related to OBDII code P1BA4 GMC for Hybrid/Electric Vehicle Battery 64 Circuit High Voltage in certain GMC models?

- It is recommended to check with GMC dealerships or the manufacturer to inquire about any existing warranties or recalls related to this specific OBDII code to potentially have the issue addressed at no cost.