AutoCodes – Cadillac – P0BBA Cadillac

P0BBA Cadillac Code - Hybrid/Electric Vehicle Battery 26 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: P0BBA Cadillac indicates Hybrid/Electric Vehicle Battery 26 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 869

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 P0BBA Cadillac 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 P0BBA Cadillac - Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage - AutoCodes.com — P0BBA Cadillac Code - Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0BBA Cadillac?

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

How to Fix the DTC P0BBA Cadillac?

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 P0BBA Cadillac 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 P0BBA Cadillac Code

1. What are the common symptoms of OBDII code P0BBA in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include a check engine light illuminated on the dashboard, reduced hybrid system performance, and potential issues with starting or charging the vehicle.

2. What are the possible causes of the Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage code in a Cadillac?

- The code P0BBA can be triggered by issues such as a faulty hybrid battery pack, damaged wiring or connections in the battery circuit, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P0BBA in a Cadillac Hybrid/Electric Vehicle?

- Diagnosing the code may involve using a scan tool to read the specific fault codes, checking the hybrid battery voltage levels, inspecting the battery circuit for any visible damage, and testing the battery management system.

4. Can I drive my Cadillac with the P0BBA code present?

- It is not recommended to drive the vehicle with the P0BBA code present, as it can lead to further damage to the hybrid system and potentially compromise the safety and performance of the vehicle.

5. What are some repair tips for addressing the Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage code?

- Repair tips may include inspecting and repairing any damaged wiring or connections in the battery circuit, testing and potentially replacing the hybrid battery pack, and resetting the fault codes after the repairs are completed.

6. How much does it typically cost to repair the P0BBA code in a Cadillac Hybrid/Electric Vehicle?

- The cost of repairing the P0BBA code can vary depending on the specific issue causing the fault code, but it may involve expenses for parts, labor, and diagnostic testing, potentially ranging from a few hundred to a few thousand dollars.

7. Can I reset the OBDII code P0BBA in my Cadillac Hybrid/Electric Vehicle on my own?

- While you may be able to clear the fault code using an OBDII scanner or by disconnecting the battery, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. What are the long-term consequences of ignoring the P0BBA code in a Cadillac Hybrid/Electric Vehicle?

- Ignoring the P0BBA code can lead to further damage to the hybrid system, reduced fuel efficiency, potential safety hazards, and eventually, the vehicle may become inoperable if the issue is not addressed promptly.

9. Are there any preventive maintenance steps to avoid encountering the Hybrid/Electric Vehicle Battery 26 Circuit Low Voltage code?

- Regularly inspecting the hybrid battery system, ensuring proper charging and maintenance of the battery pack, and addressing any warning signs or performance issues promptly can help prevent the occurrence of the P0BBA fault code.

10. How long does it typically take to repair the P0BBA code in a Cadillac Hybrid/Electric Vehicle?

- The repair time for the P0BBA code can vary depending on the specific issue and the availability of parts and labor, but it may take anywhere from a few hours to a few days to diagnose and address the problem effectively.