AutoCodes – Generic – P1B57

P1B57 Code - Hybrid/Electric Vehicle Battery 39 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: P1B57 indicates Hybrid/Electric Vehicle Battery 39 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 772

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 P1B57 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 P1B57 - Hybrid/Electric Vehicle Battery 39 Circuit Performance - AutoCodes.com — P1B57 Code - Hybrid/Electric Vehicle Battery 39 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B57?

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

How to Fix the DTC P1B57?

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 P1B57 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 P1B57 code?

Need more information on how to fix the P1B57 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B57 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B57 Buick — Hybrid/Electric Vehicle Battery 39 Circuit Performance
P1B57 Cadillac — Hybrid/Electric Vehicle Battery 39 Circuit Performance
P1B57 Chevrolet — Hybrid/Electric Vehicle Battery 39 Circuit Performance
P1B57 GMC — Hybrid/Electric Vehicle Battery 39 Circuit Performance
P1B57 Saturn — Hybrid/Electric Vehicle Battery 39 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 P1B57 Code

1. What are the common symptoms of OBDII code P1B57 (Hybrid/Electric Vehicle Battery 39 Circuit Performance)?

- Common symptoms include poor fuel economy, reduced engine performance, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1B57 being triggered?

- The code P1B57 can be triggered by issues such as a faulty battery pack, a malfunctioning battery management system, or damaged wiring in the hybrid/electric vehicle's battery circuit.

3. How can I diagnose the OBDII code P1B57 in my hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the battery components for any visible damage, and testing the battery circuit for continuity and proper voltage levels.

4. What are some repair tips for addressing code P1B57 in a hybrid/electric vehicle?

- Repair tips may include replacing the faulty battery pack or battery management system, repairing damaged wiring, and ensuring all connections are secure and functioning properly.

5. Is it safe to continue driving my vehicle with OBDII code P1B57 present?

- It is not recommended to continue driving the vehicle with code P1B57 present, as it can lead to further damage to the hybrid/electric vehicle's battery system and potentially compromise vehicle performance and safety.

6. Can I reset the OBDII code P1B57 myself, or do I need to take my vehicle to a professional technician?

- While you can attempt to clear the code using a scan tool, it is advisable to have a professional technician diagnose and repair the underlying issue to prevent the code from reoccurring.

7. Are there any preventive maintenance measures I can take to avoid OBDII code P1B57 in my hybrid/electric vehicle?

- Regularly inspecting the battery components, following the manufacturer's recommended maintenance schedule, and addressing any issues promptly can help prevent code P1B57 from occurring.

8. How much does it typically cost to repair OBDII code P1B57 in a hybrid/electric vehicle?

- The cost of repairing code P1B57 can vary depending on the extent of the issue, the parts needed for repair, and labor costs. It is recommended to obtain a few quotes from reputable repair shops for an accurate estimate.

9. What are the potential risks of ignoring OBDII code P1B57 in my hybrid/electric vehicle?

- Ignoring code P1B57 can result in reduced fuel efficiency, engine performance issues, and potential damage to the battery system, leading to costly repairs in the future.

10. Is OBDII code P1B57 specific to certain makes and models of hybrid/electric vehicles?

- Code P1B57 may be specific to certain makes and models of hybrid/electric vehicles, so it is essential to consult the vehicle's specific diagnostic manual or a professional technician for accurate information.