AutoCodes – Chevrolet – P1BBB Chevrolet

P1BBB Chevrolet Code - Hybrid/Electric Vehicle Battery 72 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: P1BBB Chevrolet indicates Hybrid/Electric Vehicle Battery 72 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 878

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 P1BBB Chevrolet 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 P1BBB Chevrolet - Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage - AutoCodes.com — P1BBB Chevrolet Code - Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBB Chevrolet?

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

How to Fix the DTC P1BBB Chevrolet?

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 P1BBB Chevrolet 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 P1BBB Chevrolet Code

1. What does OBDII code P1BBB for Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage indicate?

This code indicates a low voltage condition in Circuit 72 of the hybrid/electric vehicle battery system.

2. What are common symptoms of OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Common symptoms include poor vehicle performance, reduced fuel efficiency, and potential issues starting the vehicle.

3. What are the potential causes of OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Possible causes include a faulty battery cell, damaged wiring, loose connections, or issues with the battery management system.

4. How can I diagnose the OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Diagnosis typically involves using a diagnostic scanner to retrieve the code and inspecting the battery system components for any visible damage or issues.

5. Can I drive my vehicle with OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/electric vehicle battery system.

6. How can I repair OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Repair options may include replacing a faulty battery cell, repairing damaged wiring, tightening loose connections, or recalibrating the battery management system.

7. Is it safe to reset the OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage on my own?

While you can attempt to clear the code using a diagnostic scanner, it is important to address the underlying issue causing the low voltage condition to prevent further problems.

8. How much does it cost to fix OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Costs can vary depending on the specific repair needed, such as replacing a battery cell or repairing wiring. It is recommended to consult with a professional for an accurate estimate.

9. Can extreme weather conditions affect OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Yes, extreme temperatures can impact the performance and voltage of the hybrid/electric vehicle battery system, potentially triggering this code.

10. How often should I have the hybrid/electric vehicle battery system inspected to prevent OBDII code P1BBB Chevrolet Hybrid/Electric Vehicle Battery 72 Circuit Low Voltage?

Regular inspections as part of routine maintenance can help prevent issues like low voltage conditions, so it is advisable to follow the manufacturer's recommended service schedule.