AutoCodes – Chevrolet – P0B8D Chevrolet

P0B8D Chevrolet Code - Hybrid/Electric Vehicle Battery 17 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: P0B8D Chevrolet indicates Hybrid/Electric Vehicle Battery 17 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 1,212

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 P0B8D 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 P0B8D Chevrolet - Hybrid/Electric Vehicle Battery 17 Circuit Low Voltage - AutoCodes.com — P0B8D Chevrolet Code - Hybrid/Electric Vehicle Battery 17 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B8D Chevrolet?

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

How to Fix the DTC P0B8D 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 P0B8D 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 P0B8D Chevrolet Code

1. What are the common symptoms of OBDII code P0B8D in a Chevrolet hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power output, and a check engine light illuminated on the dashboard.

2. What are the possible causes of OBDII code P0B8D indicating Hybrid/Electric Vehicle Battery 17 Circuit Low Voltage in a Chevrolet?

- The code P0B8D can be triggered by issues such as a faulty battery pack, damaged wiring, or a malfunctioning battery control module.

3. How can I diagnose the OBDII code P0B8D in my Chevrolet hybrid/electric vehicle?

- A thorough diagnosis involves using a scan tool to retrieve the code, inspecting the battery components, and checking the wiring for any signs of damage or corrosion.

4. What are the repair options for fixing OBDII code P0B8D related to low voltage in a Chevrolet hybrid/electric vehicle?

- Repair options may include replacing the battery pack, repairing damaged wiring, resetting the battery control module, or seeking professional assistance for advanced troubleshooting.

5. Can I continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P0B8D present?

- It is not recommended to continue driving with the code P0B8D present, as it can lead to further damage to the battery system and potentially affect the vehicle's performance.

6. How can regular maintenance help prevent OBDII code P0B8D from occurring in my Chevrolet hybrid/electric vehicle?

- Regular maintenance, such as checking the battery connections, monitoring battery health, and following manufacturer recommendations, can help prevent issues that trigger the P0B8D code.

7. Are there any safety precautions I should take when working on the hybrid/electric vehicle battery system related to OBDII code P0B8D?

- It is crucial to follow proper safety procedures, such as disconnecting the high-voltage system, wearing insulated gloves, and consulting a professional if unsure about handling the battery system.

8. Can extreme weather conditions impact the occurrence of OBDII code P0B8D in a Chevrolet hybrid/electric vehicle?

- Yes, extreme temperatures can affect the performance of the battery system, potentially leading to voltage-related issues triggering the P0B8D code.

9. How long does it typically take to repair OBDII code P0B8D in a Chevrolet hybrid/electric vehicle?

- The repair duration can vary depending on the specific issue causing the code, ranging from a few hours for simple fixes to several days for more complex repairs.

10. Is it possible to clear the OBDII code P0B8D in a Chevrolet hybrid/electric vehicle without addressing the underlying issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely resurface if the root cause is not resolved.