AutoCodes – Cadillac – P1B97 Cadillac

P1B97 Cadillac Code - Hybrid/Electric Vehicle Battery 60 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: P1B97 Cadillac indicates Hybrid/Electric Vehicle Battery 60 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 838

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B97 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 P1B97 Cadillac - Hybrid/Electric Vehicle Battery 60 Circuit Low Voltage - AutoCodes.com — P1B97 Cadillac Code - Hybrid/Electric Vehicle Battery 60 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B97 Cadillac?

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

How to Fix the DTC P1B97 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 P1B97 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 P1B97 Cadillac Code

What does the OBDII code P1B97 mean for my Cadillac?

P1B97 indicates a low voltage condition in the Hybrid/Electric Vehicle Battery 60 circuit, which may affect the vehicle's hybrid or electric functionality.

What are the common symptoms of the P1B97 code?

Symptoms may include reduced power, erratic performance of the electric motor, warning lights on the dashboard, or issues with battery charging and discharging.

What could cause the P1B97 code to trigger?

Common causes include faulty battery connections, a failing hybrid battery, damaged wiring or connectors, or issues with the battery management system.

How can I diagnose the issue related to the P1B97 code?

Start by checking the battery connections for corrosion or loose wires. Use a multimeter to check the voltage in the battery circuit and inspect for any damaged wiring.

What are some potential repairs for the P1B97 code?

Repairs may involve cleaning or tightening battery connections, replacing damaged wiring, servicing or replacing the hybrid battery, or reprogramming the vehicle's battery management system.

Is it safe to drive my Cadillac with the P1B97 code?

It may not be safe to drive, as the performance of the hybrid system could be compromised, potentially leading to further issues. It's advisable to address the code promptly.

Can I clear the P1B97 code myself?

Yes, you can clear the code using an OBDII scanner, but if the underlying issue isn't fixed, the code is likely to return.

Will clearing the P1B97 code fix the problem?

No, clearing the code will not fix the underlying issue; it only resets the check engine light. Proper diagnosis and repair are necessary to resolve the problem.

How can I prevent the P1B97 code from coming back?

Regular maintenance of the hybrid battery system, ensuring clean and secure connections, and addressing any electrical issues promptly can help prevent the code from recurring.