AutoCodes – GMC – P0BAA GMC

P0BAA GMC Code - Hybrid/Electric Vehicle Battery 23 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: P0BAA GMC indicates Hybrid/Electric Vehicle Battery 23 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 903

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0BAA 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 P0BAA GMC - Hybrid/Electric Vehicle Battery 23 Circuit Performance - AutoCodes.com — P0BAA GMC Code - Hybrid/Electric Vehicle Battery 23 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0BAA GMC?

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

How to Fix the DTC P0BAA 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 P0BAA 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.

Need more information about the P0BAA GMC code?

Need more information on how to fix the P0BAA GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0BAA GMC code diagnosed by a professional: Find a repair shop in your area

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 P0BAA GMC Code

1. What does OBDII code P0BAA for GMC Hybrid/Electric Vehicle Battery 23 Circuit Performance mean?

The code P0BAA indicates a performance issue in the 23rd circuit of the hybrid/electric vehicle battery system in a GMC vehicle.

2. What are the common symptoms of OBDII code P0BAA in a GMC vehicle?

Common symptoms of code P0BAA may include reduced fuel efficiency, decreased hybrid system performance, and potential issues with starting or charging the vehicle.

3. What are the possible causes of OBDII code P0BAA in a GMC hybrid/electric vehicle?

Potential causes of code P0BAA can include a faulty battery cell, issues with the battery management system, wiring problems, or a malfunctioning sensor within the hybrid/electric battery system.

4. How can I diagnose OBDII code P0BAA in my GMC hybrid/electric vehicle?

Diagnosing code P0BAA typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the hybrid/electric battery system for any visible damage or loose connections, and testing individual components for proper functionality.

5. Can I continue driving my GMC vehicle with OBDII code P0BAA?

It is not recommended to continue driving your GMC vehicle with an active P0BAA fault code, as it can lead to further damage to the hybrid/electric battery system and potentially result in complete system failure.

6. How can I repair OBDII code P0BAA in my GMC hybrid/electric vehicle?

Repairing code P0BAA may involve replacing a faulty battery cell, repairing damaged wiring, recalibrating the battery management system, or addressing any other specific issues identified during the diagnostic process.

7. Is it possible to reset OBDII code P0BAA in a GMC vehicle?

While you can clear the fault code using a diagnostic scanner, it is crucial to address the underlying issue causing code P0BAA to prevent it from reoccurring and potentially causing more significant problems.

8. How much does it typically cost to repair OBDII code P0BAA in a GMC hybrid/electric vehicle?

The cost of repairing code P0BAA can vary depending on the specific cause of the issue, the extent of the repair needed, and whether any components need to be replaced. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P0BAA in a GMC vehicle?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing complex issues related to the hybrid/electric battery system, such as code P0BAA, may require specialized knowledge and equipment best handled by a professional technician.

10. How can I prevent OBDII code P0BAA from occurring in my GMC hybrid/electric vehicle?

Regular maintenance, such as checking the battery system's health, ensuring proper charging, and addressing any warning signs promptly, can help prevent issues like code P0BAA in your GMC hybrid/electric vehicle.