AutoCodes – Cadillac – P1BBE Cadillac

P1BBE Cadillac Code - Hybrid/Electric Vehicle Battery 73 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: P1BBE Cadillac indicates Hybrid/Electric Vehicle Battery 73 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 923

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 P1BBE 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 P1BBE Cadillac - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage - AutoCodes.com — P1BBE Cadillac Code - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBE Cadillac?

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

How to Fix the DTC P1BBE 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 P1BBE 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 P1BBE Cadillac Code

1. What are the common symptoms of OBDII code P1BBE (Cadillac) related to Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Common symptoms include poor acceleration, reduced power, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Possible causes may include a faulty high voltage battery, issues with the battery management system, or problems with the battery cooling system.

3. How can I diagnose the OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Diagnosis typically involves using a scan tool to read the code, inspecting the high voltage battery components, and checking for any visible signs of damage or corrosion.

4. Can I still drive my Cadillac with OBDII code P1BBE Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- It is not recommended to drive your Cadillac with this code as it can lead to further damage to the hybrid/electric system.

5. How can I repair OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Repair may involve replacing the high voltage battery, repairing any damaged wiring or connections, or reprogramming the battery management system.

6. Is it safe to attempt DIY repairs for OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Due to the high voltage nature of hybrid/electric vehicle systems, it is recommended to seek professional help for repairs related to this code.

7. What are the potential risks of ignoring OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Ignoring this code can lead to further damage to the hybrid/electric system, reduced fuel efficiency, and potential safety hazards.

8. How much does it cost to repair OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- Repair costs can vary depending on the extent of the damage, but it is advisable to consult a professional for an accurate estimate.

9. Can a low voltage issue in the hybrid/electric system cause other problems in the vehicle?

- Yes, a low voltage issue can cause other electrical components to malfunction, affecting the overall performance of the vehicle.

10. How can I prevent OBDII code P1BBE (Cadillac) Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage from occurring in the future?

- Regular maintenance of the high voltage battery system, including checking for leaks, ensuring proper cooling, and following manufacturer recommendations, can help prevent this code from reoccurring.