AutoCodes – Cadillac – P1BCA Cadillac

P1BCA Cadillac Code - Hybrid/Electric Vehicle Battery 77 Circuit Low 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: P1BCA Cadillac indicates Hybrid/Electric Vehicle Battery 77 Circuit Low 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.

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Code Popularity 948

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 P1BCA 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 P1BCA Cadillac - Hybrid/Electric Vehicle Battery 77 Circuit Low Voltage - AutoCodes.com — P1BCA Cadillac Code - Hybrid/Electric Vehicle Battery 77 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BCA Cadillac?

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

How to Fix the DTC P1BCA 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 P1BCA 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 P1BCA Cadillac Code

1. What are the common symptoms of OBDII code P1BCA Cadillac?

The common symptoms of code P1BCA Cadillac include decreased fuel efficiency, reduced power, and potential issues with starting the vehicle.

2. What are the possible causes of OBDII code P1BCA in a Cadillac hybrid/electric vehicle?

The code P1BCA in a Cadillac hybrid/electric vehicle usually indicates a low voltage issue in the Hybrid/Electric Vehicle Battery 77 Circuit. Possible causes include a faulty battery, damaged wiring, or a problem with the battery management system.

3. How can I diagnose the OBDII code P1BCA in my Cadillac hybrid/electric vehicle?

Diagnosing the code P1BCA requires using an OBDII scanner to retrieve the fault codes, inspecting the battery and related wiring for any visible damage, and testing the battery voltage and connections for proper functioning.

4. Can I still drive my Cadillac with OBDII code P1BCA present?

While it may be possible to drive your Cadillac with the code P1BCA present, it is not recommended as it can lead to further damage to the hybrid/electric system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How do I repair OBDII code P1BCA in my Cadillac hybrid/electric vehicle?

Repairing OBDII code P1BCA in a Cadillac hybrid/electric vehicle may involve replacing the Hybrid/Electric Vehicle Battery 77 Circuit components, repairing damaged wiring, or recalibrating the battery management system. It is recommended to have the repairs done by a certified technician.

6. Is it safe to continue driving my Cadillac if the Hybrid/Electric Vehicle Battery 77 Circuit has low voltage?

Driving with low voltage in the Hybrid/Electric Vehicle Battery 77 Circuit can be risky as it may lead to unexpected power loss or other electrical issues while on the road. It is advisable to address the problem promptly to ensure safety and prevent further damage.

7. How much does it typically cost to repair OBDII code P1BCA in a Cadillac hybrid/electric vehicle?

The cost of repairing OBDII code P1BCA in a Cadillac hybrid/electric vehicle can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It is recommended to get a diagnostic and repair estimate from a qualified mechanic.

8. Can a DIY enthusiast fix OBDII code P1BCA in a Cadillac hybrid/electric vehicle?

While some basic troubleshooting steps can be performed by a DIY enthusiast, repairing OBDII code P1BCA in a Cadillac hybrid/electric vehicle often requires specialized tools and knowledge of hybrid/electric systems. It is best to consult a professional technician for accurate diagnosis and repair.

9. What preventive measures can I take to avoid OBDII code P1BCA in my Cadillac hybrid/electric vehicle?

To prevent OBDII code P1BCA in your Cadillac hybrid/electric vehicle, it is important to adhere to regular maintenance schedules, monitor the battery's health, and address any warning signs promptly. Keeping the hybrid/electric system in good condition can help prevent such issues.

10. How long does it typically take to repair OBDII code P1BCA in a Cadillac hybrid/electric vehicle?

The repair time for OBDII code P1BCA in a Cadillac hybrid/electric vehicle can vary depending on the complexity of the issue and availability of parts. It is advisable to consult with a technician to get an estimate of the repair timeline.