AutoCodes – Chevrolet – P0B68 Chevrolet

P0B68 Chevrolet Code - Hybrid/Electric Vehicle Battery 10 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: P0B68 Chevrolet indicates Hybrid/Electric Vehicle Battery 10 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 939

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 P0B68 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 P0B68 Chevrolet - Hybrid/Electric Vehicle Battery 10 Circuit - AutoCodes.com — P0B68 Chevrolet Code - Hybrid/Electric Vehicle Battery 10 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B68 Chevrolet?

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

How to Fix the DTC P0B68 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 P0B68 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 P0B68 Chevrolet Code

1. What does the OBDII code P0B68 mean for a Chevrolet?

The P0B68 code indicates an issue with the Hybrid/Electric Vehicle Battery 10 Circuit, suggesting a fault in the electrical connection or performance of the tenth battery circuit module.

2. What are the common symptoms of the P0B68 code in a Chevrolet?

Symptoms may include reduced vehicle performance, a hybrid system warning light, decreased fuel efficiency, or limited electric-only driving capability.

3. What causes the P0B68 code to trigger?

Common causes include a faulty battery module, corroded or damaged wiring, poor electrical connections, or a malfunctioning battery control module.

4. Can I continue driving with the P0B68 code on my Chevrolet?

While the vehicle may still operate, ignoring the code can lead to further damage to the hybrid system and reduced overall performance. Itâ€™s best to address the issue promptly.

5. How is the P0B68 code diagnosed?

A technician will use a scan tool to read the fault code, inspect the battery circuit wiring and connections, and test the affected battery module for proper voltage and resistance.

6. What repairs are typically needed for the P0B68 code?

Repairs may involve replacing the faulty battery module, repairing or replacing damaged wiring, or reprogramming or replacing the battery control module.

7. How much does it cost to fix the P0B68 code on a Chevrolet?

Repair costs can vary depending on the specific issue but typically range from $300 to $1,000 or more, especially if a battery module replacement is required.

8. Can a dead 12V battery cause the P0B68 code?

No, this code specifically relates to the hybrid battery circuit, not the 12V auxiliary battery. However, a weak 12V battery can cause other hybrid system issues.

9. How can I prevent the P0B68 code from occurring?

Regular maintenance of the hybrid system, including inspecting wiring and connections, and avoiding extreme temperature exposure can help prevent this issue.

10. Does the P0B68 code mean the hybrid battery needs replacement?

Not necessarily. The issue may be isolated to a single circuit or module within the battery pack, which can often be repaired or replaced without replacing the entire battery pack.