AutoCodes – Chevrolet – P1BC8 Chevrolet

P1BC8 Chevrolet Code - Hybrid/Electric Vehicle Battery 76 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: P1BC8 Chevrolet indicates Hybrid/Electric Vehicle Battery 76 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,050

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BC8 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 P1BC8 Chevrolet - Hybrid/Electric Vehicle Battery 76 Circuit High Voltage - AutoCodes.com — P1BC8 Chevrolet Code - Hybrid/Electric Vehicle Battery 76 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BC8 Chevrolet?

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

How to Fix the DTC P1BC8 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 P1BC8 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.

Need more information about the P1BC8 Chevrolet code?

Need more information on how to fix the P1BC8 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BC8 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1BC8 Chevrolet Code

1. What does the OBDII code P1BC8 mean for a Chevrolet vehicle?

The code P1BC8 indicates an issue with the high voltage circuit in battery 76 of a hybrid or electric vehicle, meaning the voltage level is higher than expected.

2. What are common symptoms of the P1BC8 code in a Chevrolet vehicle?

Symptoms may include a check engine light, reduced fuel efficiency, limited electric driving range, or the vehicle entering limp mode.

3. What causes the P1BC8 code to appear?

The code can be triggered by a faulty hybrid battery module, damaged wiring or connectors, a failed battery cell, or an issue with the battery energy control module.

4. How does the P1BC8 code affect vehicle performance?

The vehicle may experience reduced power or efficiency, and in some cases, it may restrict electric mode operation or disable hybrid functions.

5. Can the P1BC8 code damage the vehicle if ignored?

Yes, ignoring this code can lead to further damage to the hybrid battery system, higher repair costs, and potential safety risks.

6. How is the P1BC8 code diagnosed?

A technician will use a diagnostic scanner to read the code, inspect the battery modules, check for damaged wiring, and test the battery energy control module.

7. What repairs are typically needed to fix the P1BC8 code?

Repairs might include replacing a faulty battery module, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the battery energy control module.

8. Is it safe to drive with the P1BC8 code present?

It is not recommended to drive with this code active, as it can affect the vehicle's performance and safety, potentially leading to further issues.

9. Can a low 12V battery cause the P1BC8 code?

A weak 12V battery is unlikely to directly cause the P1BC8 code, but it can affect the control modules and should still be checked as part of the diagnosis.

10. How much does it cost to fix the P1BC8 code on a Chevrolet vehicle?

Repair costs vary depending on the issue but can range from $200 for wiring repairs to over $2,000 for hybrid battery replacement.