AutoCodesGeneric – P1BC6

P1BC6 Code - Hybrid/Electric Vehicle Battery 76 Circuit Performance

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
P1BC6 indicates Hybrid/Electric Vehicle Battery 76 Circuit Performance.
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 819
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 12, 2020
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Code P1BC6 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 P1BC6 - Hybrid/Electric Vehicle Battery 76 Circuit Performance - AutoCodes.com
P1BC6 Code - Hybrid/Electric Vehicle Battery 76 Circuit Performance

What are the Possible Causes of the DTC P1BC6?

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

How to Fix the DTC P1BC6?

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 P1BC6 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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Information for Specific Makes

  • P1BC6 Buick — Hybrid/Electric Vehicle Battery 76 Circuit Performance
  • P1BC6 Cadillac — Hybrid/Electric Vehicle Battery 76 Circuit Performance
  • P1BC6 Chevrolet — Hybrid/Electric Vehicle Battery 76 Circuit Performance
  • P1BC6 GMC — Hybrid/Electric Vehicle Battery 76 Circuit Performance
  • P1BC6 Saturn — Hybrid/Electric Vehicle Battery 76 Circuit Performance
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 P1BC6 Code

What does OBDII code P1BC6 mean?

Code P1BC6 indicates an issue with the performance of Hybrid/Electric Vehicle Battery 76 Circuit, which is related to the battery’s electrical system.

What are the common symptoms of code P1BC6?

Symptoms may include reduced hybrid or EV performance, warning lights on the dashboard, or a decrease in battery efficiency.

What causes code P1BC6?

Common causes include faulty wiring or connectors in the battery circuit, a malfunctioning battery module, or issues with the battery control module.

Can I drive my vehicle with code P1BC6?

While the vehicle may still be drivable, it’s not recommended as prolonged use with this code may cause further damage or reduced efficiency.

How is code P1BC6 diagnosed?

Technicians use a scan tool to read the code and inspect the battery circuit for wiring issues, connector damage, or faults in the battery module.

What repairs are needed for code P1BC6?

Repairs may include fixing damaged wiring or connectors, replacing the affected battery module, or reprogramming the battery control module.

How much does it cost to fix code P1BC6?

Repair costs vary depending on the severity of the issue, but fixing battery circuit problems can range from $200 to several thousand dollars.

Can a weak hybrid battery cause code P1BC6?

Yes, an aging or failing hybrid battery can lead to circuit performance issues and trigger this code.

Will code P1BC6 reset on its own?

The code is unlikely to reset on its own and typically requires repairs and a code reset using an OBDII scanner.

Is code P1BC6 specific to certain vehicles?

Yes, this code is most commonly found in hybrid and electric vehicles due to their specialized battery systems.

Discuss the causes and fixes for P1BC6 OBDII Code

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