AutoCodes – Cadillac – P0B59 Cadillac

P0B59 Cadillac Code - Hybrid/Electric Vehicle Battery 7 Circuit

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: P0B59 Cadillac indicates Hybrid/Electric Vehicle Battery 7 Circuit.
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 1,391

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B59 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 P0B59 Cadillac - Hybrid/Electric Vehicle Battery 7 Circuit - AutoCodes.com — P0B59 Cadillac Code - Hybrid/Electric Vehicle Battery 7 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B59 Cadillac?

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

How to Fix the DTC P0B59 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 P0B59 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 P0B59 Cadillac Code

1. What are the common symptoms of OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- Common symptoms include decreased fuel efficiency, inability to start the vehicle, and warning lights related to the hybrid/electric system.

2. What causes the OBDII code P0B59 to appear in a Cadillac hybrid/electric vehicle?

- The code P0B59 indicates a fault in Hybrid/Electric Vehicle Battery 7 Circuit, which can be caused by a defective battery cell, wiring issues, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P0B59 in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the hybrid/electric battery system for visible damage, and performing electrical tests to pinpoint the issue.

4. Can I drive my Cadillac with the OBDII code P0B59 present?

- It is not recommended to drive the vehicle with the P0B59 code as it can lead to further damage to the hybrid/electric system and potentially unsafe driving conditions.

5. What are some repair tips for fixing the OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- Repair tips may include replacing the faulty battery cell, repairing damaged wiring, resetting the battery management system, or seeking professional help from a certified technician.

6. Is it possible to reset the OBDII code P0B59 in a Cadillac hybrid/electric vehicle without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause to prevent the code from reappearing and ensure the safety and performance of the vehicle.

7. How much does it typically cost to repair the OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced or repaired. It is advisable to obtain quotes from reputable repair shops.

8. Are there any preventive maintenance measures to avoid the OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- Regularly inspecting the hybrid/electric battery system, following the manufacturer's maintenance schedule, and avoiding overcharging the battery can help prevent issues that trigger the P0B59 code.

9. Can a DIY enthusiast with automotive experience fix the OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- While some simple tasks like checking for loose connections can be done by DIY enthusiasts, diagnosing and repairing complex issues related to the hybrid/electric system should be left to experienced professionals.

10. How long does it take to repair the OBDII code P0B59 in a Cadillac hybrid/electric vehicle?

- The repair time can vary based on the specific problem causing the code, availability of parts, and the expertise of the technician. It is advisable to consult with the repair shop for an estimated timeline.