AutoCodes – Cadillac – P0B3C Cadillac

P0B3C Cadillac Code - Hybrid/Electric Vehicle Battery 1 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: P0B3C Cadillac indicates Hybrid/Electric Vehicle Battery 1 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 932

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B3C 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 P0B3C Cadillac - Hybrid/Electric Vehicle Battery 1 Circuit Performance - AutoCodes.com — P0B3C Cadillac Code - Hybrid/Electric Vehicle Battery 1 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B3C Cadillac?

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

How to Fix the DTC P0B3C 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 P0B3C 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 P0B3C Cadillac Code

1. What are the common symptoms of OBDII code P0B3C in a Cadillac hybrid/electric vehicle?

The common symptoms include decreased fuel efficiency, reduced power output, illuminated check engine light, and potential issues with the hybrid/electric system.

2. What are the possible causes of code P0B3C in a Cadillac hybrid/electric vehicle?

Possible causes of this code include a faulty hybrid/electric vehicle battery, damaged wiring or connectors in the battery circuit, software issues, or a failing battery control module.

3. How can I diagnose the OBDII code P0B3C in my Cadillac hybrid/electric vehicle?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the hybrid/electric vehicle battery and its connections for any visible damage, and potentially performing a battery load test.

4. Can I continue driving my Cadillac with the P0B3C code present?

It is not recommended to continue driving the 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 addressing code P0B3C in a Cadillac hybrid/electric vehicle?

Repair tips may include checking and repairing any damaged wiring or connectors in the battery circuit, testing and replacing the hybrid/electric vehicle battery if necessary, and updating the software as recommended by the manufacturer.

6. How much does it typically cost to repair OBDII code P0B3C in a Cadillac hybrid/electric vehicle?

The cost of repair can vary depending on the specific issue causing the code, the extent of the damage, and whether the vehicle is still under warranty. Repairs related to the hybrid/electric system can be costly, so it's advisable to consult a professional technician for an accurate estimate.

7. Is it possible to reset the OBDII code P0B3C in a Cadillac hybrid/electric vehicle without repairing the issue?

While you can clear the code temporarily with an OBDII scanner, the underlying problem causing the code will persist, and the check engine light is likely to come back on once the issue is detected again.

8. How important is it to address OBDII code P0B3C promptly in a Cadillac hybrid/electric vehicle?

It is crucial to address this code promptly to prevent further damage to the hybrid/electric system, ensure optimal vehicle performance, and maintain overall safety while driving the vehicle.

9. Are there any recalls or technical service bulletins related to OBDII code P0B3C in Cadillac hybrid/electric vehicles?

It's recommended to check with the Cadillac dealership or the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle.

10. Can I prevent OBDII code P0B3C from occurring in my Cadillac hybrid/electric vehicle?

Regular maintenance of the hybrid/electric system, including checking the battery health, keeping the system clean and free of debris, and following the manufacturer's recommended service schedule, can help prevent issues that may trigger the P0B3C code.