AutoCodes – Saturn – P0B92 Saturn

P0B92 Saturn Code - Hybrid/Electric Vehicle Battery 18 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
P0B92 Saturn indicates Hybrid/Electric Vehicle Battery 18 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 982
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 08, 2020
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Code P0B92 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 P0B92 Saturn - Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage - AutoCodes.com
P0B92 Saturn Code - Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage

What are the Possible Causes of the DTC P0B92 Saturn?

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

How to Fix the DTC P0B92 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 P0B92 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 P0B92 Saturn Code

What does the OBD-II code P0B92 mean on a Saturn?

The P0B92 code indicates a "Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage," meaning the voltage in battery block 18 is lower than expected.

What are the common symptoms of the P0B92 code?

Symptoms may include an illuminated check engine light, reduced hybrid or electric performance, battery warnings on the dashboard, and decreased fuel efficiency.

What causes the P0B92 code to appear?

Common causes include a faulty battery module, degraded battery cells, corroded or damaged wiring, or a malfunction in the battery control module.

Can driving with the P0B92 code damage the vehicle?

Yes, driving with this code can strain the hybrid/electric system, potentially causing further damage to the battery or other components.

How is the P0B92 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the battery's individual cells for low voltage, and check the wiring and connectors for damage or corrosion.

What repairs can fix the P0B92 code?

Repairs may include replacing the affected battery module, repairing or replacing damaged wiring, or reprogramming or replacing the battery control module.

Can a weak 12V auxiliary battery cause the P0B92 code?

No, this code specifically pertains to the high-voltage hybrid or electric battery, not the 12V auxiliary battery.

How much does it cost to repair the P0B92 code?

Repair costs depend on the issue but may range from $500 to over $2,000 if battery modules or the control unit need replacement.

Can I clear the P0B92 code without repairs?

Clearing the code without addressing the underlying issue may temporarily turn off the warning, but the problem will likely return and could worsen.

Is the P0B92 code covered under warranty?

It might be covered under the hybrid or electric vehicle battery warranty, so check with your dealer for specifics.

Discuss the causes and fixes for P0B92 Saturn OBDII Code

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