AutoCodes – Generic – P1BC3

P1BC3 Code - Hybrid/Electric Vehicle Battery 75 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: P1BC3 indicates Hybrid/Electric Vehicle Battery 75 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 3,264

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 P1BC3 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 P1BC3 - Hybrid/Electric Vehicle Battery 75 Circuit Performance - AutoCodes.com — P1BC3 Code - Hybrid/Electric Vehicle Battery 75 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BC3?

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

How to Fix the DTC P1BC3?

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 P1BC3 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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Need Help with the Code?

Get the P1BC3 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BC3 Buick — Hybrid/Electric Vehicle Battery 75 Circuit Performance
P1BC3 Cadillac — Hybrid/Electric Vehicle Battery 75 Circuit Performance
P1BC3 Chevrolet — Hybrid/Electric Vehicle Battery 75 Circuit Performance
P1BC3 GMC — Hybrid/Electric Vehicle Battery 75 Circuit Performance
P1BC3 Saturn — Hybrid/Electric Vehicle Battery 75 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 P1BC3 Code

1. What are the common symptoms of OBDII code P1BC3 (Hybrid/Electric Vehicle Battery 75 Circuit Performance)?

- Common symptoms include reduced hybrid battery performance, decreased fuel efficiency, and potential engine stalling.

2. What are some possible causes of OBDII code P1BC3?

- Causes can include a faulty hybrid battery pack, issues with the battery management system, damaged wiring or connectors, or software malfunctions.

3. How can I diagnose the cause of OBDII code P1BC3?

- Diagnosing this code typically involves conducting a thorough inspection of the hybrid battery system, checking for any visible damage, and using specialized diagnostic tools to analyze battery performance.

4. Can I continue driving my vehicle with OBDII code P1BC3 present?

- It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially cause safety hazards.

5. What are some repair tips for resolving OBDII code P1BC3?

- Repair tips may include performing a battery system reset, replacing damaged wiring or connectors, recalibrating the battery management system, or seeking professional assistance from a certified technician.

6. Is OBDII code P1BC3 specific to certain hybrid or electric vehicle models?

- This code can be specific to certain hybrid or electric vehicle models, so it is important to consult your vehicle's manufacturer or a professional technician for accurate diagnosis and repair.

7. Can a DIY enthusiast repair OBDII code P1BC3 on their own?

- Repairing OBDII code P1BC3 may require specialized tools and knowledge of hybrid/electric vehicle systems, so it is advisable for DIY enthusiasts to seek professional help to ensure proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code P1BC3?

- The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the damage, and whether any parts need to be replaced. It is recommended to obtain quotes from reputable repair shops.

9. Are there any preventive maintenance measures to avoid OBDII code P1BC3?

- Regular maintenance of the hybrid/electric vehicle system, including checking the battery's health, ensuring proper charging habits, and following manufacturer recommendations, can help prevent issues leading to this code.

10. Can OBDII code P1BC3 be triggered by environmental factors?

- Environmental factors such as extreme temperatures, humidity, or physical damage to the vehicle can contribute to triggering OBDII code P1BC3. Regular inspections and maintenance can help mitigate these risks.