AutoCodes – Chevrolet – P0BB1 Chevrolet

P0BB1 Chevrolet Code - Hybrid/Electric Vehicle Battery 24 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: P0BB1 Chevrolet indicates Hybrid/Electric Vehicle Battery 24 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 848

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0BB1 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 P0BB1 Chevrolet - Hybrid/Electric Vehicle Battery 24 Circuit High Voltage - AutoCodes.com — P0BB1 Chevrolet Code - Hybrid/Electric Vehicle Battery 24 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0BB1 Chevrolet?

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

How to Fix the DTC P0BB1 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 P0BB1 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 P0BB1 Chevrolet Code

1. What are the common symptoms of OBDII code P0BB1 in a Chevrolet hybrid/electric vehicle?

The common symptoms include check engine light illumination, reduced hybrid system performance, and potential loss of power.

2. What could be the possible causes of OBDII code P0BB1 in a Chevrolet hybrid/electric vehicle?

The code P0BB1 typically indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 24 Circuit, which could be caused by wiring faults, damaged battery components, or a malfunctioning battery management system.

3. How serious is OBDII code P0BB1 in a Chevrolet hybrid/electric vehicle?

Code P0BB1 should be addressed promptly as it indicates a potential high voltage issue in the vehicle's battery system, which can affect performance and safety. It is recommended to have the vehicle inspected and repaired by a qualified technician.

4. Can I continue driving my Chevrolet hybrid/electric vehicle with OBDII code P0BB1?

It is not advisable to continue driving the vehicle with code P0BB1 present, as it can lead to further damage to the battery system and potentially compromise the vehicle's safety and performance.

5. What are some DIY repair tips for OBDII code P0BB1 in a Chevrolet hybrid/electric vehicle?

DIY repair for this code is not recommended due to the complexity of the high voltage battery system. It is best to have the vehicle inspected and repaired by a professional with experience in hybrid/electric vehicle technology.

6. How much does it typically cost to repair OBDII code P0BB1 in a Chevrolet hybrid/electric vehicle?

The cost of repairing OBDII code P0BB1 can vary depending on the extent of the issue and the specific repairs needed. It is advisable to get a diagnostic assessment from a qualified technician to determine the exact cost.

7. How can I prevent OBDII code P0BB1 from occurring in my Chevrolet hybrid/electric vehicle?

Regular maintenance and inspections of the high voltage battery system, as well as following manufacturer recommendations for battery care, can help prevent issues that lead to code P0BB1.

8. Is OBDII code P0BB1 specific to Chevrolet hybrid/electric vehicles, or can it occur in other brands as well?

While the specific code P0BB1 may vary by manufacturer, similar high voltage circuit issues can occur in other hybrid/electric vehicles, not just Chevrolet models.

9. What steps should I take if OBDII code P0BB1 keeps recurring in my Chevrolet hybrid/electric vehicle after repairs?

If the code keeps recurring after repairs, it is essential to have the vehicle reevaluated by a qualified technician to identify any underlying issues that may have been missed during the initial repair process.

10. Can OBDII code P0BB1 cause any long-term damage to the Chevrolet hybrid/electric vehicle if left unresolved?

If left unresolved, OBDII code P0BB1 can potentially cause long-term damage to the high voltage battery system, leading to more extensive and costly repairs down the line. It is crucial to address this issue promptly to prevent further damage.