AutoCodes – Generic – P0B92

P0B92 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 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 2,632

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 P0B92 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 - Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage - AutoCodes.com — P0B92 Code - Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B92?

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

How to Fix the DTC P0B92?

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 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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Information for Specific Makes

P0B92 Buick — Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage
P0B92 Cadillac — Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage
P0B92 Chevrolet — Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage
P0B92 GMC — Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage
P0B92 Saturn — Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage

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 Code

1. What are the common symptoms of OBDII code P0B92 (Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage)?

- 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 P0B92?

- The code P0B92 can be triggered by issues such as a failing hybrid vehicle battery, a faulty Battery Energy Control Module (BECM), or a problem with the circuit wiring.

3. How can I diagnose OBDII code P0B92?

- Diagnosing code P0B92 typically involves using a diagnostic scanner to read the code, inspecting the hybrid battery and related components for any visible damage, and testing the circuit voltage using a multimeter.

4. Can I still drive my vehicle with OBDII code P0B92 present?

- It is not recommended to drive your vehicle with code P0B92 present, as it can lead to further damage to the hybrid system and potentially leave you stranded on the road.

5. How can I repair OBDII code P0B92?

- Repairing code P0B92 may involve replacing the hybrid vehicle battery, repairing or replacing damaged circuit wiring, or addressing any issues with the Battery Energy Control Module (BECM).

6. Is it safe to reset the OBDII code P0B92 without addressing the underlying issue?

- It is not recommended to simply reset the code without addressing the underlying issue, as the problem will likely resurface and potentially cause more significant damage to your vehicle.

7. Can a DIY enthusiast repair OBDII code P0B92 at home?

- While some basic diagnostics can be done at home, repairing code P0B92 often requires specialized tools and expertise, making it best left to professional technicians familiar with hybrid/electric vehicle systems.

8. How much does it typically cost to repair OBDII code P0B92?

- The cost of repairing code P0B92 can vary depending on the underlying issue, the make and model of the vehicle, and labor rates in your area. It is advisable to get a few quotes from reputable repair shops.

9. Are there any preventive measures to avoid OBDII code P0B92 in the future?

- Regular maintenance of the hybrid/electric vehicle battery system, including proper charging habits and periodic inspections, can help prevent issues that may lead to code P0B92.

10. Can code P0B92 be a recurring problem even after it has been repaired?

- Yes, code P0B92 can recur if the root cause of the issue was not properly addressed during the initial repair. It is essential to ensure that all related components are thoroughly inspected and repaired to prevent recurrence.