AutoCodes – Chevrolet – P0B3B Chevrolet

P0B3B Chevrolet Code - Hybrid/Electric Vehicle Battery 1 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: P0B3B Chevrolet indicates Hybrid/Electric Vehicle Battery 1 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 1,164

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B3B 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 P0B3B Chevrolet - Hybrid/Electric Vehicle Battery 1 Circuit - AutoCodes.com — P0B3B Chevrolet Code - Hybrid/Electric Vehicle Battery 1 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B3B Chevrolet?

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

How to Fix the DTC P0B3B 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 P0B3B 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 P0B3B Chevrolet Code

1. What are the common symptoms of OBDII code P0B3B in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the illumination of the check engine light, reduced hybrid/electric propulsion performance, and potential issues with the high-voltage battery.

2. What are the possible causes of OBDII code P0B3B in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty Hybrid Powertrain Control Module (HPCM), damaged wiring or connectors in the Hybrid/Electric Vehicle Battery 1 Circuit, or a problem with the high-voltage battery itself.

3. How can I diagnose the OBDII code P0B3B in my Chevrolet hybrid/electric vehicle?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking the high-voltage battery connections and wiring, and inspecting the Hybrid Powertrain Control Module for any signs of damage.

4. Can I still drive my Chevrolet hybrid/electric vehicle with OBDII code P0B3B present?

- It is not recommended to drive the vehicle with this code present, as it can indicate potential issues with the high-voltage system, which may compromise the safety and performance of the vehicle.

5. How can I repair OBDII code P0B3B in my Chevrolet hybrid/electric vehicle?

- Repairing this code may involve replacing the Hybrid Powertrain Control Module, repairing or replacing damaged wiring or connectors in the Hybrid/Electric Vehicle Battery 1 Circuit, or addressing any issues with the high-voltage battery.

6. Is it safe to attempt repairs on the high-voltage system related to OBDII code P0B3B in a Chevrolet hybrid/electric vehicle?

- Working on the high-voltage system of a hybrid/electric vehicle can be dangerous and should only be done by trained professionals with the proper safety equipment and knowledge of high-voltage systems.

7. How much does it cost to repair OBDII code P0B3B in a Chevrolet hybrid/electric vehicle?

- The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It is recommended to consult with a qualified technician for an accurate estimate.

8. Can a DIY enthusiast without specialized training fix OBDII code P0B3B in a Chevrolet hybrid/electric vehicle?

- Due to the complexity and potential dangers associated with high-voltage systems in hybrid/electric vehicles, it is generally not recommended for DIY enthusiasts without specialized training to attempt repairs on OBDII code P0B3B.