AutoCodes – Generic – P0B54

P0B54 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 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 3,178

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

What does this mean?

What are the Possible Causes of the DTC P0B54?

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

How to Fix the DTC P0B54?

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 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.

Need more information about the P0B54 code?

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Need Help with the Code?

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Information for Specific Makes

P0B54 Buick — Hybrid/Electric Vehicle Battery 6 Circuit
P0B54 Cadillac — Hybrid/Electric Vehicle Battery 6 Circuit
P0B54 Chevrolet — Hybrid/Electric Vehicle Battery 6 Circuit
P0B54 GMC — Hybrid/Electric Vehicle Battery 6 Circuit
P0B54 Saturn — Hybrid/Electric Vehicle Battery 6 Circuit

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 Code

What does the OBD-II code P0B54 mean?

Code P0B54 indicates an issue with the Hybrid/Electric Vehicle Battery 6 Circuit, which typically involves a fault in the battery's voltage or communication system for that specific section.

What are the common symptoms of code P0B54?

Symptoms may include reduced fuel efficiency, limited power output, warning lights on the dashboard, and potential loss of hybrid system functionality.

What causes the P0B54 code to appear?

Common causes include a faulty battery module, damaged wiring or connectors, issues with the battery control module, or corrosion in the battery circuit.

Can I still drive my vehicle with a P0B54 code?

While the vehicle may still operate, driving with this code can lead to reduced efficiency and further damage to the hybrid system. It’s best to address the issue promptly.

How is the P0B54 code diagnosed?

Technicians diagnose this code by using a scan tool to read the vehicle’s data, inspecting the battery circuit wiring, checking for corrosion or damage, and testing the individual battery modules.

What repairs are commonly required for a P0B54 code?

Repairs may involve replacing a defective battery module, repairing or replacing damaged wiring, cleaning corrosion, or reprogramming the battery control module.

Can I fix the P0B54 code myself?

If you have experience with hybrid systems, you may be able to inspect wiring or connectors and clean corrosion. However, replacing battery modules or reprogramming components often requires professional expertise.

How much does it typically cost to repair the P0B54 code?

Repair costs can vary widely but typically range from $200 to $1,500 depending on whether wiring repairs or battery module replacements are needed.

What happens if the P0B54 code isn’t fixed?

Ignoring the P0B54 code can lead to decreased performance, further damage to the hybrid system, and potentially higher repair costs over time.

Is the P0B54 code specific to certain vehicles?

This code is commonly associated with hybrid or electric vehicles, but its occurrence and repair process may vary depending on the make and model of the vehicle.