AutoCodes – Saturn – P0B7E Saturn

P0B7E Saturn Code - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage

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: P0B7E Saturn indicates Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage.
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 1,001

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B7E 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 P0B7E Saturn - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage - AutoCodes.com — P0B7E Saturn Code - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B7E Saturn?

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

How to Fix the DTC P0B7E 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 P0B7E 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 P0B7E Saturn Code

What does the OBDII code P0B7E mean for a Saturn vehicle?

The code P0B7E indicates a low voltage issue in the Hybrid/Electric Vehicle Battery 14 Circuit, which is part of the battery monitoring system.

What are the common symptoms of the P0B7E code?

Symptoms may include reduced fuel efficiency, limited electric motor performance, warning lights on the dashboard, or difficulty starting the vehicle.

What causes the P0B7E code to appear?

Causes can include a faulty battery cell, damaged wiring or connectors in the circuit, issues with the battery control module, or excessive resistance in the circuit.

Can I drive my Saturn with the P0B7E code?

Driving with this code may result in reduced performance and could further damage the hybrid battery system. Itâ€™s best to address the issue promptly.

How is the P0B7E code diagnosed?

A technician will use an OBDII scanner to confirm the code, inspect the battery and related wiring, and test the voltage of the Battery 14 Circuit to identify the issue.

What repairs are needed to fix the P0B7E code?

Repairs may include replacing damaged wiring, fixing poor connections, replacing a faulty battery cell, or servicing the battery control module.

How much does it cost to repair the P0B7E code?

Repair costs vary depending on the specific issue but can range from $100 for minor wiring repairs to over $1,000 if the hybrid battery needs replacement.

Can the P0B7E code be caused by extreme weather?

Yes, extreme temperatures can impact battery performance and connections, potentially triggering the P0B7E code.

How can I prevent the P0B7E code from occurring?

Regular maintenance of the hybrid battery system, inspecting wiring for damage, and avoiding extreme temperature exposure can help prevent this code.

Is the P0B7E code specific to Saturn hybrid vehicles?

While the code is common in hybrid and electric vehicles, its exact meaning and implications depend on the vehicle manufacturer, including Saturn. Always consult the vehicleâ€™s manual or a professional for specifics.