AutoCodes – Chevrolet – P1BB0 Chevrolet

P1BB0 Chevrolet Code - Hybrid/Electric Vehicle Battery 68 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: P1BB0 Chevrolet indicates Hybrid/Electric Vehicle Battery 68 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 899

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 P1BB0 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 P1BB0 Chevrolet - Hybrid/Electric Vehicle Battery 68 Circuit High Voltage - AutoCodes.com — P1BB0 Chevrolet Code - Hybrid/Electric Vehicle Battery 68 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB0 Chevrolet?

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

How to Fix the DTC P1BB0 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 P1BB0 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 P1BB0 Chevrolet Code

1. What does the OBDII code P1BB0 mean on a Chevrolet?

The code P1BB0 indicates a fault in the Hybrid/Electric Vehicle Battery 68 Circuit, specifically a high voltage issue.

2. What are the common symptoms of P1BB0 on a Chevrolet?

Symptoms may include the check engine light turning on, reduced hybrid/electric vehicle performance, and potential issues with charging or discharging the battery.

3. What causes the P1BB0 code to be triggered in a Chevrolet?

This code is often caused by issues such as a damaged battery voltage sensor, faulty wiring or connectors, or internal faults within the hybrid battery pack.

4. Can I drive my Chevrolet with the P1BB0 code active?

Driving with this code is not recommended as it may lead to reduced vehicle performance and could potentially damage the hybrid battery system.

5. How is the P1BB0 code diagnosed in a Chevrolet?

A technician will typically use a scan tool to read the code, inspect the battery voltage sensor and wiring, and perform voltage tests on the hybrid battery system.

6. How can I fix the P1BB0 code on my Chevrolet?

Repairs may involve replacing a faulty battery voltage sensor, repairing or replacing damaged wiring, or addressing internal issues within the hybrid battery pack.

7. Is the P1BB0 code specific to certain Chevrolet models?

This code can appear on Chevrolet hybrid or electric vehicles equipped with high-voltage battery systems.

8. How much does it cost to repair the P1BB0 code on a Chevrolet?

The cost can vary widely depending on the specific issue, ranging from $200 for minor wiring repairs to several thousand dollars if the hybrid battery requires replacement.

9. Can a low 12V auxiliary battery cause the P1BB0 code in a Chevrolet?

While unlikely, a low 12V battery can sometimes cause related electrical issues. Itâ€™s best to verify the condition of the 12V battery during diagnostics.

10. How can I prevent the P1BB0 code from occurring again on my Chevrolet?

Regular maintenance of the hybrid battery system, checking for damaged wiring, and ensuring connectors are secure can help prevent this code from reoccurring.