AutoCodes – Chevrolet – P1BB5 Chevrolet

P1BB5 Chevrolet Code - Hybrid/Electric Vehicle Battery 70 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: P1BB5 Chevrolet indicates Hybrid/Electric Vehicle Battery 70 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 1,008

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 P1BB5 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 P1BB5 Chevrolet - Hybrid/Electric Vehicle Battery 70 Circuit Low Voltage - AutoCodes.com — P1BB5 Chevrolet Code - Hybrid/Electric Vehicle Battery 70 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB5 Chevrolet?

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

How to Fix the DTC P1BB5 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 P1BB5 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 P1BB5 Chevrolet Code

1. What are the common symptoms of OBDII code P1BB5 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What can cause the OBDII code P1BB5 indicating Hybrid/Electric Vehicle Battery 70 Circuit Low Voltage in a Chevrolet?

- The code P1BB5 can be triggered by issues such as a faulty hybrid/electric vehicle battery, damaged battery wiring, or a problem with the battery control module.

3. How can I diagnose the OBDII code P1BB5 in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the battery and associated wiring for any visible damage, and testing the battery voltage levels.

4. Can driving with the OBDII code P1BB5 present cause further damage to the vehicle?

- Continuing to drive with the P1BB5 code may lead to further deterioration of the hybrid/electric system components and potentially cause more severe issues over time.

5. What are some repair tips for resolving the OBDII code P1BB5 in a Chevrolet hybrid/electric vehicle?

- Repair tips may include checking and cleaning the battery terminals, inspecting and repairing damaged wiring, resetting the fault code after addressing the underlying issue, or seeking professional assistance for complex repairs.

6. Is it safe to attempt DIY repairs for the OBDII code P1BB5 related to the Hybrid/Electric Vehicle Battery 70 Circuit Low Voltage issue?

- While some basic checks and maintenance tasks can be done by DIY enthusiasts, complex repairs involving the hybrid/electric system should be handled by trained professionals to ensure safety and proper functioning.

7. How urgent is it to address the OBDII code P1BB5 in a Chevrolet hybrid/electric vehicle?

- It is recommended to address the P1BB5 code promptly to prevent further damage to the hybrid/electric system and maintain the vehicle's performance and efficiency.

8. Will resetting the OBDII code P1BB5 in a Chevrolet clear the underlying issue?

- Resetting the fault code may temporarily turn off the check engine light, but it will not fix the root cause of the problem triggering the P1BB5 code. It is essential to diagnose and address the underlying issue for a permanent solution.

9. Can extreme weather conditions impact the occurrence of the OBDII code P1BB5 in a Chevrolet hybrid/electric vehicle?

- Yes, extreme temperatures can affect the performance of the hybrid/electric vehicle battery and related components, potentially leading to issues like low voltage and triggering the P1BB5 fault code.

10. Are there any preventive measures to avoid encountering the OBDII code P1BB5 related to Hybrid/Electric Vehicle Battery 70 Circuit Low Voltage in a Chevrolet?

- Regular maintenance of the hybrid/electric system, monitoring battery health, keeping the vehicle in a moderate temperature environment, and addressing any warning signs promptly can help prevent the occurrence of the P1BB5 code.