AutoCodes – Cadillac – P1BC3 Cadillac

P1BC3 Cadillac 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 Cadillac 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 826

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

What does this mean?

What are the Possible Causes of the DTC P1BC3 Cadillac?

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

How to Fix the DTC P1BC3 Cadillac?

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 Cadillac 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 P1BC3 Cadillac Code

1. What are the common symptoms of OBDII code P1BC3 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include decreased fuel efficiency, reduced power, and the illumination of the check engine light on the dashboard.

2. What are the possible causes of OBDII code P1BC3 in a Cadillac Hybrid/Electric Vehicle?

- Possible causes include a faulty high voltage battery, issues with the battery management system, wiring problems, or a malfunctioning battery temperature sensor.

3. How can I diagnose OBDII code P1BC3 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, inspecting the high voltage battery for any visible damage, and conducting electrical tests on the battery components.

4. Can I continue driving my Cadillac 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 unsafe driving conditions.

5. How can I repair OBDII code P1BC3 in my Cadillac Hybrid/Electric Vehicle?

- Repairing this code may involve replacing the high voltage battery, repairing or replacing damaged wiring, resetting the battery management system, or recalibrating the battery temperature sensor.

6. Are there any DIY tips for addressing OBDII code P1BC3 in a Cadillac Hybrid/Electric Vehicle?

- DIY tips may include checking for loose connections, ensuring proper battery maintenance, and following the manufacturer's guidelines for hybrid/electric vehicle care.

7. Is it safe to reset the OBDII code P1BC3 in my Cadillac Hybrid/Electric Vehicle using an OBDII scanner?

- While resetting the code may temporarily turn off the check engine light, it is essential to address the underlying issue causing the code to prevent potential safety hazards and further damage.

8. How do I prevent OBDII code P1BC3 from appearing in my Cadillac Hybrid/Electric Vehicle?

- Regular maintenance of the high voltage battery, keeping an eye on the battery management system, and addressing any warning signs promptly can help prevent this code from appearing.

9. Can extreme weather conditions affect the occurrence of OBDII code P1BC3 in a Cadillac Hybrid/Electric Vehicle?

- Yes, extreme temperatures can impact the performance of the high voltage battery and the associated components, potentially leading to the triggering of this code.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P1BC3 in a Cadillac Hybrid/Electric Vehicle?

- Yes, due to the complex nature of hybrid/electric vehicle systems and the potential safety risks involved, it is advisable to consult a certified automotive technician for proper diagnosis and repair of this code.