AutoCodes – Cadillac – P0B7F Cadillac

P0B7F Cadillac Code - Hybrid/Electric Vehicle Battery 14 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: P0B7F Cadillac indicates Hybrid/Electric Vehicle Battery 14 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 772

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 P0B7F 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 P0B7F Cadillac - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage - AutoCodes.com — P0B7F Cadillac Code - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B7F Cadillac?

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

How to Fix the DTC P0B7F 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 P0B7F 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 P0B7F Cadillac Code

1. What are the common symptoms of OBDII code P0B7F in a Cadillac hybrid/electric vehicle?

- Common symptoms include reduced fuel efficiency, loss of power, and the vehicle going into a reduced power mode.

2. What does the OBDII code P0B7F Cadillac Hybrid/Electric Vehicle Battery 14 Circuit High Voltage indicate?

- This code indicates that there is a high voltage condition detected in the 14th circuit of the hybrid/electric vehicle battery.

3. What are the possible causes of OBDII code P0B7F in a Cadillac hybrid/electric vehicle?

- Possible causes include a faulty battery pack, damaged high voltage wiring, a malfunctioning battery management system, or issues with the battery cooling system.

4. How serious is OBDII code P0B7F in a Cadillac hybrid/electric vehicle?

- This code is considered serious as it can affect the performance and safety of the vehicle. It is recommended to address the issue promptly.

5. Can I continue driving my Cadillac with OBDII code P0B7F present?

- It is not advisable to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric system.

6. How can I diagnose and repair OBDII code P0B7F in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves checking the battery pack, inspecting high voltage wiring, and testing the battery management system. Repair may involve replacing faulty components or addressing wiring issues.

7. Is it safe to attempt to repair OBDII code P0B7F in a Cadillac hybrid/electric vehicle myself?

- Due to the high voltage nature of the components involved, it is recommended to have this code diagnosed and repaired by a qualified technician with experience in hybrid/electric vehicle systems.

8. How much does it cost to fix OBDII code P0B7F in a Cadillac hybrid/electric vehicle?

- The cost of repair can vary depending on the specific issue causing the code and the labor rates in your area. It is best to get a diagnosis from a professional for an accurate estimate.

9. Can OBDII code P0B7F be intermittent or permanent in a Cadillac hybrid/electric vehicle?

- The code can be either intermittent or permanent, depending on the underlying issue. It is important to address the root cause to prevent it from reoccurring.

10. Are there any preventive maintenance tips to avoid OBDII code P0B7F in a Cadillac hybrid/electric vehicle?

- Regularly servicing the hybrid/electric system, checking for leaks, and ensuring proper cooling system operation can help prevent issues that may trigger this code.