AutoCodes – Cadillac – P1BC0 Cadillac

P1BC0 Cadillac Code - Hybrid/Electric Vehicle Battery 74 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: P1BC0 Cadillac indicates Hybrid/Electric Vehicle Battery 74 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 863

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 P1BC0 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 P1BC0 Cadillac - Hybrid/Electric Vehicle Battery 74 Circuit Performance - AutoCodes.com — P1BC0 Cadillac Code - Hybrid/Electric Vehicle Battery 74 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BC0 Cadillac?

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

How to Fix the DTC P1BC0 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 P1BC0 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 P1BC0 Cadillac Code

1. What are the common symptoms of OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include decreased fuel efficiency, reduced power, and potential issues with the hybrid/electric battery system.

2. What are the possible causes of OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- Possible causes include a faulty battery 74 circuit, damaged wiring or connectors, software issues, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1BC0 on my Cadillac Hybrid/Electric Vehicle?

- To diagnose this code, you may need a professional OBDII scanner to read the specific code and pinpoint the issue within the hybrid/electric battery system.

4. Can I still drive my Cadillac Hybrid/Electric Vehicle with the OBDII code P1BC0 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially compromise safety.

5. What repairs are typically needed to address OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- Repairs may involve replacing the faulty battery 74 circuit, repairing damaged wiring, updating software, or addressing issues with the battery management system.

6. How urgent is it to address the OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- It is important to address this code promptly to prevent further damage to the hybrid/electric system and ensure the vehicle operates safely and efficiently.

7. Can I reset the OBDII code P1BC0 on my Cadillac Hybrid/Electric Vehicle myself?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. How can I prevent OBDII code P1BC0 from appearing on my Cadillac Hybrid/Electric Vehicle?

- Regular maintenance, such as checking the battery system and connectors, keeping the software up to date, and addressing any warning signs promptly, can help prevent this code from appearing.

9. Are there any safety concerns associated with OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- Yes, there may be safety concerns related to the hybrid/electric system's performance, so it is essential to address this code to ensure the vehicle operates safely.

10. Can a DIY enthusiast tackle the repairs for OBDII code P1BC0 on a Cadillac Hybrid/Electric Vehicle?

- Due to the complexity of the hybrid/electric system, it is recommended to seek professional assistance or guidance from a qualified technician to address this code effectively.