AutoCodes – Cadillac – P0B97 Cadillac

P0B97 Cadillac Code - Hybrid/Electric Vehicle Battery 19 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: P0B97 Cadillac indicates Hybrid/Electric Vehicle Battery 19 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 822

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 P0B97 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 P0B97 Cadillac - Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage - AutoCodes.com — P0B97 Cadillac Code - Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B97 Cadillac?

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

How to Fix the DTC P0B97 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 P0B97 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 P0B97 Cadillac Code

1. What are the common symptoms of OBDII code P0B97 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include a decrease in fuel efficiency, difficulty starting the vehicle, reduced power output, and potentially triggering the check engine light.

2. What are the possible causes of the OBDII code P0B97 indicating Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage in a Cadillac?

- Possible causes include a faulty battery pack, damaged battery cells, poor electrical connections, or issues with the battery management system.

3. How can I diagnose the OBDII code P0B97 in my Cadillac Hybrid/Electric Vehicle?

- To diagnose this code, it is recommended to use a diagnostic scanner to retrieve the specific fault codes, inspect the battery pack for any visible damage, and check the battery voltage levels.

4. What are the repair options for fixing the Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage issue in a Cadillac?

- Repair options may include replacing the damaged battery cells, repairing any faulty electrical connections, recalibrating the battery management system, or replacing the entire battery pack if necessary.

5. Can I continue driving my Cadillac with the OBDII code P0B97 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially result in a complete loss of power.

6. How much does it typically cost to repair the Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage issue in a Cadillac?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It is advisable to consult with a certified mechanic for an accurate estimate.

7. Are there any maintenance tips to prevent the recurrence of the OBDII code P0B97 in a Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting the battery pack for signs of wear or damage, following the manufacturer's recommended maintenance schedule, and avoiding extreme temperature conditions can help prevent the recurrence of this code.

8. Can a DIY enthusiast fix the OBDII code P0B97 issue in a Cadillac Hybrid/Electric Vehicle?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing complex hybrid/electric vehicle systems should be left to experienced professionals due to the high voltage nature of these components.

9. How important is it to address the OBDII code P0B97 promptly in a Cadillac Hybrid/Electric Vehicle?

- It is crucial to address this code promptly to prevent further damage to the hybrid/electric system, ensure optimal vehicle performance, and maintain the safety of the vehicle and its occupants.

10. Is the OBDII code P0B97 common in Cadillac Hybrid/Electric Vehicles?

- While not extremely common, the P0B97 code indicating Hybrid/Electric Vehicle Battery 19 Circuit Low Voltage can occur in Cadillac Hybrid/Electric Vehicles, especially as the vehicle ages or if maintenance is neglected.