AutoCodes – GMC – P1B57 GMC

P1B57 GMC 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 GMC 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 756

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

What does this mean?

What are the Possible Causes of the DTC P1B57 GMC?

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

How to Fix the DTC P1B57 GMC?

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 GMC 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 P1B57 GMC Code

1. What are common symptoms of OBDII code P1B57 GMC related to Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1B57 GMC for Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- Potential causes include issues with the hybrid/electric vehicle battery, faulty battery management system, wiring problems, or a malfunctioning battery control module.

3. How can I diagnose OBDII code P1B57 GMC indicating Hybrid/Electric Vehicle Battery 39 Circuit Performance issues?

- Diagnosis typically involves using a scan tool to read the code, conducting a visual inspection of the battery and related components, and performing voltage tests on the battery system.

4. Can driving with OBDII code P1B57 GMC present any risks to the vehicle or driver?

- Continuing to drive with this code may lead to further damage to the hybrid/electric battery system, reduced vehicle performance, and potential safety risks. It is recommended to address the issue promptly.

5. What repairs are typically needed to resolve OBDII code P1B57 GMC for Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- Repairs may involve replacing the hybrid/electric vehicle battery, repairing or replacing faulty wiring, resetting the battery management system, or updating the battery control module software.

6. Are there any DIY tips for addressing OBDII code P1B57 GMC related to Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- DIY tips may include checking for loose or corroded battery connections, ensuring proper battery coolant levels, and following manufacturer-specific troubleshooting procedures if available.

7. How critical is it to address OBDII code P1B57 GMC for Hybrid/Electric Vehicle Battery 39 Circuit Performance promptly?

- It is important to address this code promptly to prevent further damage to the hybrid/electric vehicle battery system, maintain vehicle efficiency, and ensure safe operation of the vehicle.

8. Can weather conditions or driving habits contribute to triggering OBDII code P1B57 GMC for Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- Extreme temperatures, frequent short trips, and prolonged periods of inactivity can potentially contribute to issues with the hybrid/electric vehicle battery system, leading to the triggering of this code.

9. Is it necessary to visit a dealership or specialized mechanic to address OBDII code P1B57 GMC for Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- While specialized knowledge and tools may be required for proper diagnosis and repair, some basic troubleshooting steps can be performed by DIY enthusiasts. However, seeking professional help is recommended for more complex issues.

10. How can regular maintenance help prevent OBDII code P1B57 GMC occurrences related to Hybrid/Electric Vehicle Battery 39 Circuit Performance?

- Regularly scheduled maintenance, such as checking battery health, monitoring coolant levels, and following manufacturer recommendations, can help prevent issues leading to this OBDII code.