AutoCodes – Cadillac – P1B95 Cadillac

P1B95 Cadillac Code - Hybrid/Electric Vehicle Battery 59 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: P1B95 Cadillac indicates Hybrid/Electric Vehicle Battery 59 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 895

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 P1B95 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 P1B95 Cadillac - Hybrid/Electric Vehicle Battery 59 Circuit High Voltage - AutoCodes.com — P1B95 Cadillac Code - Hybrid/Electric Vehicle Battery 59 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B95 Cadillac?

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

How to Fix the DTC P1B95 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 P1B95 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 P1B95 Cadillac Code

1. What are common symptoms of OBDII code P1B95 in a Cadillac hybrid/electric vehicle?

- Common symptoms include the check engine light illuminating, reduced power or performance, and potential issues with the hybrid/electric system.

2. What does the OBDII code P1B95 Cadillac indicate about the hybrid/electric vehicle battery 59 circuit?

- This code specifically points to a high voltage condition in the Hybrid/Electric Vehicle Battery 59 Circuit of the Cadillac.

3. What are possible causes of OBDII code P1B95 in a Cadillac hybrid/electric vehicle?

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

4. How can I diagnose the OBDII code P1B95 in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the battery management system for faults, inspecting wiring for damage, and testing the high-voltage circuit components.

5. Is it safe to continue driving my Cadillac with OBDII code P1B95 present?

- It is not recommended to drive the vehicle with this code active, as it indicates a potential high-voltage issue that could be hazardous. Seek professional assistance to diagnose and repair the problem.

6. Can I reset the OBDII code P1B95 in my Cadillac hybrid/electric vehicle by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is not a recommended long-term solution. The underlying issue causing the code needs to be properly diagnosed and repaired.

7. How much does it typically cost to repair OBDII code P1B95 in a Cadillac hybrid/electric vehicle?

- The cost of repair can vary depending on the exact cause of the code. It is advisable to consult a professional mechanic or dealership for an accurate diagnosis and repair estimate.

8. Are there any preventive maintenance tips to avoid encountering OBDII code P1B95 in a Cadillac hybrid/electric vehicle?

- Regular maintenance of the hybrid/electric system, including checking the battery health and monitoring for any warning signs, can help prevent issues that may trigger this code.

9. Can a DIY enthusiast with automotive experience fix OBDII code P1B95 in a Cadillac hybrid/electric vehicle?

- Due to the complexity and safety considerations involved with high-voltage systems, it is recommended to seek assistance from a qualified technician or dealership for the repair of this code.

10. Will fixing OBDII code P1B95 improve the overall performance and efficiency of my Cadillac hybrid/electric vehicle?

- Resolving this code is crucial for the safe operation of the vehicle and can help restore optimal performance and efficiency by ensuring the proper functioning of the high-voltage system.