AutoCodes – Cadillac – P0BB3 Cadillac

P0BB3 Cadillac Code - Hybrid/Electric Vehicle Battery 25 Circuit

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: P0BB3 Cadillac indicates Hybrid/Electric Vehicle Battery 25 Circuit.
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 872

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 P0BB3 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 P0BB3 Cadillac - Hybrid/Electric Vehicle Battery 25 Circuit - AutoCodes.com — P0BB3 Cadillac Code - Hybrid/Electric Vehicle Battery 25 Circuit

What does this mean?

What are the Possible Causes of the DTC P0BB3 Cadillac?

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

How to Fix the DTC P0BB3 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 P0BB3 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 P0BB3 Cadillac Code

1. What are the common symptoms of OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

The common symptoms of OBDII code P0BB3 in a Cadillac hybrid/electric vehicle include decreased fuel efficiency, loss of power, and sometimes the vehicle may not start.

2. What are the possible causes of OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

Possible causes of OBDII code P0BB3 in a Cadillac hybrid/electric vehicle include a faulty battery, damaged battery cell, wiring issues in the battery circuit, or a malfunctioning battery control module.

3. How can I diagnose OBDII code P0BB3 in my Cadillac hybrid/electric vehicle?

Diagnosing OBDII code P0BB3 in a Cadillac hybrid/electric vehicle requires using a scan tool to read the code and accessing the hybrid/electric vehicle battery system for further inspection. It is recommended to seek assistance from a professional mechanic or dealership for accurate diagnosis.

4. Can I repair OBDII code P0BB3 in my Cadillac hybrid/electric vehicle myself?

Repairing OBDII code P0BB3 in a Cadillac hybrid/electric vehicle may require specialized knowledge and tools related to hybrid/electric vehicle systems. It is recommended to consult with a qualified mechanic or dealership for proper diagnosis and repair.

5. How much does it typically cost to repair OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

The cost to repair OBDII code P0BB3 in a Cadillac hybrid/electric vehicle can vary depending on the specific issue causing the code, parts needed for repair, and labor costs. It is advisable to get a detailed estimate from a professional mechanic or dealership.

6. Is it safe to continue driving my Cadillac hybrid/electric vehicle with OBDII code P0BB3 present?

It is not recommended to continue driving your Cadillac hybrid/electric vehicle with OBDII code P0BB3 present, as it can lead to further damage to the hybrid/electric vehicle battery system and potential safety hazards. It is best to address the issue promptly.

7. How often does OBDII code P0BB3 occur in Cadillac hybrid/electric vehicles?

OBDII code P0BB3 related to the hybrid/electric vehicle battery circuit can occur sporadically in Cadillac hybrid/electric vehicles, especially as the vehicle ages or if there are underlying battery system issues.

8. Are there any preventive maintenance measures to avoid OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

To help avoid OBDII code P0BB3 in a Cadillac hybrid/electric vehicle, regular maintenance of the hybrid/electric vehicle battery system, such as checking for corrosion on terminals, ensuring proper connections, and following manufacturer recommendations, can be beneficial.

9. Can extreme weather conditions affect the likelihood of OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

Extreme weather conditions, such as extreme heat or cold, can potentially impact the performance of the hybrid/electric vehicle battery system and increase the likelihood of issues like OBDII code P0BB3 occurring. Proper care and maintenance during such conditions are essential.

10. How long does it take to repair OBDII code P0BB3 in a Cadillac hybrid/electric vehicle?

The repair time for OBDII code P0BB3 in a Cadillac hybrid/electric vehicle can vary depending on the complexity of the issue and the availability of parts. It is advisable to consult with a professional mechanic or dealership for an estimated repair timeline.