AutoCodes – Generic – P1BBC

P1BBC Code - Hybrid/Electric Vehicle Battery 72 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: P1BBC indicates Hybrid/Electric Vehicle Battery 72 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 1,283

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 P1BBC 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 P1BBC - Hybrid/Electric Vehicle Battery 72 Circuit High Voltage - AutoCodes.com — P1BBC Code - Hybrid/Electric Vehicle Battery 72 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBC?

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

How to Fix the DTC P1BBC?

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 P1BBC 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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Need Help with the Code?

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Information for Specific Makes

P1BBC Buick — Hybrid/Electric Vehicle Battery 72 Circuit High Voltage
P1BBC Cadillac — Hybrid/Electric Vehicle Battery 72 Circuit High Voltage
P1BBC Chevrolet — Hybrid/Electric Vehicle Battery 72 Circuit High Voltage
P1BBC GMC — Hybrid/Electric Vehicle Battery 72 Circuit High Voltage
P1BBC Saturn — Hybrid/Electric Vehicle Battery 72 Circuit High Voltage

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 P1BBC Code

1. What does the OBDII code P1BBC mean?

P1BBC indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 72 circuit, often related to abnormal voltage levels or a fault in the battery management system.

2. What are the common symptoms of the P1BBC code?

Symptoms include an illuminated check engine light, reduced vehicle performance, limited electric driving range, or the vehicle entering a fail-safe or limp mode.

3. What causes the P1BBC code to activate?

Common causes include a malfunctioning battery pack, faulty wiring, corroded or loose electrical connections, or a defective battery control module.

4. Can I drive my vehicle with the P1BBC code?

It is not recommended to drive with this code active, as it may lead to further damage to the battery system or reduced vehicle safety and efficiency.

5. How is the P1BBC code diagnosed?

A technician will use a scan tool to check the code, inspect the high-voltage battery system, test the wiring and connectors, and evaluate the battery control module for faults.

6. What repairs are needed to fix the P1BBC code?

Repairs may include replacing damaged battery cells, repairing or replacing faulty wiring, cleaning corroded connectors, or reprogramming or replacing the battery control module.

7. Can a dead 12V battery cause the P1BBC code?

While unlikely, a weak or dead 12V battery might contribute to communication issues or voltage irregularities that could indirectly trigger the code.

8. How much does it cost to fix the P1BBC code?

Repair costs vary widely depending on the issue but can range from $200 for minor wiring repairs to $5,000 or more for a battery pack replacement.

9. How can I prevent the P1BBC code from reoccurring?

Regular maintenance of the hybrid battery system, inspecting wiring and connectors for damage, and ensuring proper cooling of the battery pack can help prevent this code.

10. Is the P1BBC code covered under warranty?

High-voltage battery issues are often covered under the hybrid or electric vehicleâ€™s warranty, which typically lasts 8-10 years or 100,000-150,000 miles. Check with your manufacturer for specific coverage.