AutoCodes – Generic – P1B54

P1B54 Code - Hybrid/Electric Vehicle Battery 38 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: P1B54 indicates Hybrid/Electric Vehicle Battery 38 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 986

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 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1B54 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 P1B54 - Hybrid/Electric Vehicle Battery 38 Circuit Performance - AutoCodes.com — P1B54 Code - Hybrid/Electric Vehicle Battery 38 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B54?

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

How to Fix the DTC P1B54?

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 P1B54 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 P1B54 code?

Need more information on how to fix the P1B54 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B54 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B54 Buick — Hybrid/Electric Vehicle Battery 38 Circuit Performance
P1B54 Cadillac — Hybrid/Electric Vehicle Battery 38 Circuit Performance
P1B54 Chevrolet — Hybrid/Electric Vehicle Battery 38 Circuit Performance
P1B54 GMC — Hybrid/Electric Vehicle Battery 38 Circuit Performance
P1B54 Saturn — Hybrid/Electric Vehicle Battery 38 Circuit Performance

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 P1B54 Code

1. What are the common symptoms of OBDII code P1B54 (Hybrid/Electric Vehicle Battery 38 Circuit Performance)?

- Common symptoms of this code may include reduced hybrid system performance, decreased fuel efficiency, and potential issues with the vehicle's battery management system.

2. What are the possible causes of OBDII code P1B54?

- The code P1B54 can be triggered by issues such as a faulty battery temperature sensor, damaged wiring in the battery circuit, or a malfunctioning battery control module.

3. How can I diagnose OBDII code P1B54 on my hybrid/electric vehicle?

- Diagnosis of code P1B54 typically involves using a scan tool to retrieve the code, checking the battery connections and wiring for any visible damage, and testing the battery temperature sensor for proper function.

4. Can I repair OBDII code P1B54 on my own, or do I need to take my vehicle to a professional mechanic?

- Depending on your level of automotive expertise, you may be able to address this code on your own by inspecting and repairing any damaged wiring or connectors. However, for more complex issues, it is recommended to seek assistance from a qualified technician.

5. Is it safe to continue driving my vehicle with OBDII code P1B54 present?

- It is generally not recommended to continue driving your vehicle with code P1B54, as unresolved issues with the hybrid/electric vehicle battery circuit can lead to further complications and potential damage to the vehicle's electrical system.

6. What are some tips for preventing OBDII code P1B54 from reoccurring in the future?

- To prevent the reoccurrence of code P1B54, it is advisable to regularly inspect the battery circuit components, ensure proper maintenance of the battery system, and address any warning signs or symptoms promptly.

7. How much does it typically cost to repair OBDII code P1B54 on a hybrid/electric vehicle?

- The cost of repairing code P1B54 can vary depending on the specific underlying issue causing the code, the vehicle's make and model, and labor costs. It is recommended to obtain quotes from different mechanics or dealerships for an accurate estimate.

8. Can a low or depleted hybrid/electric vehicle battery cause OBDII code P1B54 to be triggered?

- Yes, a low or depleted battery in a hybrid/electric vehicle can potentially trigger code P1B54 due to issues with the battery's performance or the battery control system.

9. Is there a reset procedure for OBDII code P1B54 after making repairs to the battery circuit?

- After addressing the underlying issue causing code P1B54, you may need to clear the code using a scan tool or by disconnecting the vehicle's battery for a brief period to reset the system.

10. Are there any recalls or technical service bulletins related to OBDII code P1B54 for specific hybrid/electric vehicle models?

- It is advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to code P1B54, as they may provide relevant information or solutions for addressing this issue.