AutoCodes – Cadillac – P0B92 Cadillac

P0B92 Cadillac 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 Cadillac 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 925

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

What does this mean?

What are the Possible Causes of the DTC P0B92 Cadillac?

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

How to Fix the DTC P0B92 Cadillac?

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 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P0B92 in a Cadillac hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power output, and potential difficulty starting the vehicle.

2. What can cause the OBDII code P0B92 "Hybrid/Electric Vehicle Battery 18 Circuit Low Voltage" in a Cadillac?

- This code is typically triggered by issues such as a faulty battery pack, damaged battery cells, wiring problems, or a malfunctioning battery management system.

3. How can I diagnose the cause of OBDII code P0B92 in my Cadillac hybrid/electric vehicle?

- Diagnosis usually involves performing a thorough inspection of the battery pack, checking the wiring for any visible damage, and using a scan tool to analyze the battery voltage levels.

4. Is it safe to continue driving my Cadillac with the OBDII code P0B92 present?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the hybrid/electric system and potentially compromise the safety and performance of the vehicle.

5. Can I reset the OBDII code P0B92 in my Cadillac to see if it comes back?

- While you can clear the code temporarily, it is crucial to address the underlying issue causing the code to prevent potential long-term damage to the hybrid/electric system.

6. What are some repair tips for fixing OBDII code P0B92 in a Cadillac hybrid/electric vehicle?

- Repair tips may include replacing damaged battery cells, repairing faulty wiring connections, recalibrating the battery management system, or replacing the battery pack if necessary.

7. How much does it typically cost to repair OBDII code P0B92 in a Cadillac hybrid/electric vehicle?

- The cost of repairs can vary depending on the extent of the issue, but it may range from a few hundred to a few thousand dollars, especially if parts like the battery pack need replacement.

8. Can I prevent OBDII code P0B92 from appearing in my Cadillac in the future?

- Regular maintenance of the hybrid/electric system, monitoring the battery health, and addressing any warning signs promptly can help prevent the recurrence of this code.

9. Will driving my Cadillac with the OBDII code P0B92 damage other vehicle components?

- Continuing to drive with this code can potentially damage other components of the hybrid/electric system, leading to more extensive and costly repairs down the line.

10. How urgent is it to address OBDII code P0B92 in a Cadillac hybrid/electric vehicle?

- It is crucial to address this code promptly to prevent further damage to the vehicle's hybrid/electric system and ensure the safety and performance of the vehicle.