AutoCodes – Cadillac – P0B54 Cadillac

P0B54 Cadillac Code - Hybrid/Electric Vehicle Battery 6 Circuit

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: P0B54 Cadillac indicates Hybrid/Electric Vehicle Battery 6 Circuit.
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 939

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 P0B54 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 P0B54 Cadillac - Hybrid/Electric Vehicle Battery 6 Circuit - AutoCodes.com — P0B54 Cadillac Code - Hybrid/Electric Vehicle Battery 6 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B54 Cadillac?

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

How to Fix the DTC P0B54 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 P0B54 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 P0B54 Cadillac Code

1. What are the common symptoms of OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle?

Symptoms may include reduced hybrid system performance, decreased fuel efficiency, and the illumination of the hybrid system warning light on the dashboard.

2. What does the OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle indicate?

This code specifically refers to an issue with the Hybrid/Electric Vehicle Battery 6 Circuit, signaling a potential problem with the battery pack or related components.

3. What are some possible causes of OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle?

Causes may include a faulty battery pack, damaged wiring or connectors in the Battery 6 Circuit, or issues with the battery management system.

4. How can I diagnose the OBDII code P0B54 in my Cadillac Hybrid/Electric Vehicle?

Diagnosis typically involves using a professional OBDII scanner to read the code, conducting a visual inspection of the battery components, and performing electrical tests to pinpoint the exact issue.

5. Can I continue driving my Cadillac with OBDII code P0B54 present?

It is not recommended to continue driving the vehicle with this code active, as it can lead to further damage to the hybrid system and potentially unsafe driving conditions.

6. How can I repair OBDII code P0B54 in my Cadillac Hybrid/Electric Vehicle?

Repair options may include replacing the battery pack, repairing damaged wiring or connectors, resetting the battery management system, or seeking assistance from a certified technician.

7. Are there any preventive maintenance tips to avoid OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle?

Regularly inspecting the hybrid system components, following the manufacturer's maintenance schedule, and avoiding extreme temperature conditions can help prevent issues that trigger this code.

8. Is it safe to attempt DIY repairs for OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle?

Due to the complexity of hybrid/electric vehicle systems and high-voltage components, it is recommended to seek professional assistance or consult the vehicle's service manual for proper repair procedures.

9. How much does it typically cost to repair OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle?

Repair costs can vary depending on the extent of the issue, parts needed, and labor rates. It's advisable to obtain multiple quotes from reputable repair shops or dealerships.

10. Can resetting the OBDII code P0B54 in a Cadillac Hybrid/Electric Vehicle make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and repair the root cause of the problem.