AutoCodes – Cadillac – P1B24 Cadillac

P1B24 Cadillac Code - Hybrid/Electric Vehicle Battery 31 Circuit High 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: P1B24 Cadillac indicates Hybrid/Electric Vehicle Battery 31 Circuit High 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 881

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 P1B24 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 P1B24 Cadillac - Hybrid/Electric Vehicle Battery 31 Circuit High Voltage - AutoCodes.com — P1B24 Cadillac Code - Hybrid/Electric Vehicle Battery 31 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B24 Cadillac?

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

How to Fix the DTC P1B24 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 P1B24 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 P1B24 Cadillac Code

1. What are the common symptoms of OBDII code P1B24 Cadillac "Hybrid/Electric Vehicle Battery 31 Circuit High Voltage"?

- Common symptoms include the check engine light illuminating, reduced hybrid/electric propulsion performance, and potential drivability issues.

2. What can cause the OBDII code P1B24 in a Cadillac hybrid/electric vehicle?

- The code P1B24 typically indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 31 circuit, which can be caused by a faulty battery module, damaged wiring, or a malfunctioning battery management system.

3. How serious is the OBDII code P1B24 Cadillac "Hybrid/Electric Vehicle Battery 31 Circuit High Voltage"?

- This code should be addressed promptly as it pertains to the high voltage system of the vehicle. Ignoring it can lead to further damage to the hybrid/electric components and potential safety hazards.

4. Can I continue driving my Cadillac with the P1B24 trouble code?

- It is not recommended to continue driving the vehicle with the P1B24 trouble code present, as it can affect the performance and safety of the hybrid/electric system. It's advisable to have the issue diagnosed and repaired by a professional.

5. How can I diagnose and repair the OBDII code P1B24 in my Cadillac hybrid/electric vehicle?

- Diagnosis and repair of the P1B24 code require specialized equipment and expertise. It is recommended to take your vehicle to a certified hybrid/electric vehicle technician or dealership for proper diagnosis and repair.

6. Can a DIY enthusiast fix the OBDII code P1B24 issue in a Cadillac hybrid/electric vehicle?

- Due to the complexity of the high voltage system in hybrid/electric vehicles, it is not recommended for DIY enthusiasts to attempt to fix the P1B24 code. Professional diagnosis and repair are necessary to ensure the safety and proper functioning of the vehicle.

7. How much does it cost to repair the OBDII code P1B24 in a Cadillac hybrid/electric vehicle?

- The cost of repairing the P1B24 trouble code can vary depending on the underlying cause of the issue. It's best to get a diagnostic assessment from a qualified technician to determine the exact repair cost.

8. What are the potential risks of ignoring the OBDII code P1B24 in a Cadillac hybrid/electric vehicle?

- Ignoring the P1B24 trouble code can lead to further damage to the hybrid/electric components, reduced fuel efficiency, and potential safety hazards due to the high voltage system being compromised.

9. Is the OBDII code P1B24 specific to Cadillac vehicles only?

- The OBDII code P1B24 is specific to Cadillac hybrid/electric vehicles and relates to the Hybrid/Electric Vehicle Battery 31 Circuit High Voltage. Other vehicle makes and models may have different codes for similar issues.

10. How can I prevent the OBDII code P1B24 from recurring in my Cadillac hybrid/electric vehicle?

- Regular maintenance of the hybrid/electric system, including checking the battery modules and wiring, as well as following the manufacturer's recommended service schedule, can help prevent the recurrence of the P1B24 trouble code.