AutoCodes – Saturn – P1B57 Saturn

P1B57 Saturn 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 Saturn 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 771

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

What does this mean?

What are the Possible Causes of the DTC P1B57 Saturn?

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

How to Fix the DTC P1B57 Saturn?

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 Saturn 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 Saturn Code

1. What does the OBDII code P1B57 mean on a Saturn?

P1B57 indicates a performance issue with the Hybrid/Electric Vehicle Battery 39 Circuit, commonly tied to one of the battery modules or its associated wiring.

2. What are the symptoms of the P1B57 code on a Saturn?

Symptoms may include reduced fuel efficiency, diminished vehicle performance, warning lights on the dashboard, and possible loss of hybrid or electric functionality.

3. What causes the P1B57 code to appear?

Common causes include a malfunctioning battery module, damaged wiring or connectors in the battery circuit, a faulty battery control module, or corrosion within the electrical components.

4. Can I drive my Saturn with the P1B57 code active?

While the vehicle may still be drivable, continuing to drive with this code could worsen the issue or lead to further damage to the hybrid/electric battery system.

5. How is the P1B57 code diagnosed?

Technicians diagnose this code by inspecting the hybrid battery circuit, testing the battery module for faults, checking for damaged wiring or connectors, and using a scan tool to analyze live data.

6. What repairs are needed to fix the P1B57 code?

Repairs may include replacing a defective battery module, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the battery control module.

7. How much does it cost to repair the P1B57 code?

Repair costs vary but can range from $200 to over $1,000 depending on whether wiring repairs or a hybrid battery module replacement is required.

8. Can a weak 12-volt battery cause the P1B57 code?

While unlikely, a weak 12-volt battery can sometimes cause hybrid system errors. Testing the 12-volt battery is a good starting point before diagnosing deeper issues.

9. Will clearing the code fix the P1B57 issue?

Clearing the code without addressing the underlying problem will only temporarily remove the warning and will not resolve the performance issue.

10. How can I prevent the P1B57 code from occurring?

Perform regular maintenance on your hybrid system, inspect battery components for corrosion or damage, and address warning lights promptly to prevent long-term issues.