AutoCodes – Cadillac – P1BB3 Cadillac

P1BB3 Cadillac Code - Hybrid/Electric Vehicle Battery 69 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: P1BB3 Cadillac indicates Hybrid/Electric Vehicle Battery 69 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 889

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 P1BB3 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 P1BB3 Cadillac - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage - AutoCodes.com — P1BB3 Cadillac Code - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB3 Cadillac?

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

How to Fix the DTC P1BB3 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 P1BB3 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 P1BB3 Cadillac Code

1. What are common symptoms of OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include the check engine light illuminating, reduced power mode activation, and potential issues with the vehicle's hybrid/electric power system.

2. What does the OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle indicate?

- This code specifically points to a high voltage issue in the Hybrid/Electric Vehicle Battery 69 Circuit.

3. What are possible causes of OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle?

- Possible causes may include a faulty battery module, damaged wiring in the high voltage circuit, or issues with the battery management system.

4. How can I diagnose the OBDII code P1BB3 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the high voltage circuit components, and performing voltage tests on the battery modules.

5. Is it safe to continue driving with OBDII code P1BB3 present in a Cadillac Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code present, as it indicates a potential high voltage issue that can affect the vehicle's performance and safety.

6. Can I repair OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle myself?

- Due to the complexity of high voltage systems in hybrid/electric vehicles, it is recommended to seek professional help for diagnosing and repairing this code.

7. How much does it typically cost to repair OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the exact cause of the code, but they may range from a few hundred to a few thousand dollars, especially if battery components need to be replaced.

8. Are there any maintenance tips to prevent OBDII code P1BB3 from appearing in a Cadillac Hybrid/Electric Vehicle?

- Regularly scheduled maintenance, such as checking and maintaining the high voltage system components, can help prevent issues that may trigger this code.

9. Can OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle affect fuel efficiency?

- Yes, if left unresolved, this code can lead to reduced fuel efficiency as the vehicle may not operate optimally in its hybrid/electric mode.

10. How long does it typically take to repair OBDII code P1BB3 in a Cadillac Hybrid/Electric Vehicle?

- The repair time can vary depending on the exact issue causing the code, but it may take a few hours to a full day for a qualified technician to diagnose and fix the problem.