AutoCodes – Chevrolet – P0BAA Chevrolet

P0BAA Chevrolet 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 Chevrolet 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.

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Code Popularity 921

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

What does this mean?

What are the Possible Causes of the DTC P0BAA Chevrolet?

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

How to Fix the DTC P0BAA Chevrolet?

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 Chevrolet 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 P0BAA Chevrolet Code

1. What are the common symptoms of OBDII code P0BAA in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced fuel efficiency, decreased battery performance, and potential illumination of the check engine light.

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

- Possible causes may include issues with the high voltage battery, hybrid battery control module, wiring/connectors, or other related components.

3. How can I diagnose the OBDII code P0BAA in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the high voltage battery system, checking for loose connections, and conducting voltage tests.

4. Is it safe to continue driving with OBDII code P0BAA present in a Chevrolet hybrid/electric vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage and potentially affect the vehicle's performance and safety.

5. What are some repair tips for addressing OBDII code P0BAA in a Chevrolet hybrid/electric vehicle?

- Repair tips may include checking and tightening connections, inspecting for any visible damage to wiring, replacing faulty components, and resetting the fault code after repairs.

6. Can OBDII code P0BAA be triggered by a simple temporary issue in a Chevrolet hybrid/electric vehicle?

- Yes, sometimes this code can be triggered by temporary issues such as a loose connection or minor electrical fault. However, it is important to diagnose and address the root cause promptly.

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

- Repair costs can vary depending on the specific cause of the code and the need for parts replacement or labor. It is advisable to consult a professional for an accurate estimate.

8. Are there any preventive maintenance measures to avoid OBDII code P0BAA in a Chevrolet hybrid/electric vehicle?

- Regularly checking and maintaining the high voltage battery system, keeping connections secure, and following the manufacturer's recommended service schedule can help prevent issues leading to this code.

9. Can a DIY enthusiast with automotive knowledge repair OBDII code P0BAA in a Chevrolet hybrid/electric vehicle?

- While some simple checks and repairs can be done by DIY enthusiasts, diagnosing and repairing complex high voltage systems should be left to qualified professionals due to safety and technical considerations.

10. How long does it typically take to resolve OBDII code P0BAA in a Chevrolet hybrid/electric vehicle?

- The time required to resolve this code can vary based on the diagnosis, availability of parts, and the complexity of the repair. It is advisable to consult a technician for a more accurate timeframe.