AutoCodes – Buick – P1BAD Buick

P1BAD Buick Code - Hybrid/Electric Vehicle Battery 67 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: P1BAD Buick indicates Hybrid/Electric Vehicle Battery 67 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 1,070

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 P1BAD Buick 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 P1BAD Buick - Hybrid/Electric Vehicle Battery 67 Circuit High Voltage - AutoCodes.com — P1BAD Buick Code - Hybrid/Electric Vehicle Battery 67 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BAD Buick?

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

How to Fix the DTC P1BAD Buick?

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 P1BAD Buick 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 P1BAD Buick Code

1. What are the common symptoms of OBDII code P1BAD in a Buick Hybrid/Electric Vehicle?

- Common symptoms include check engine light illumination, reduced fuel efficiency, and potential drivability issues.

2. What does the code P1BAD Buick indicate about the Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- This code indicates a high voltage condition in the Hybrid/Electric Vehicle Battery 67 Circuit, which can affect the vehicle's performance.

3. What are the possible causes of the OBDII code P1BAD in a Buick Hybrid/Electric Vehicle?

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

4. How can I diagnose the OBDII code P1BAD in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, inspecting the high voltage battery connections, and testing the circuit for faults.

5. Can I continue driving my Buick Hybrid/Electric Vehicle with the P1BAD code present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the high voltage system and potentially unsafe driving conditions.

6. What are some repair tips for addressing the P1BAD code in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing the high voltage battery if necessary, and resetting the fault code after repairs are completed.

7. Is it safe to attempt DIY repairs for the OBDII code P1BAD in a Buick Hybrid/Electric Vehicle?

- Due to the high voltage nature of the system involved, it is recommended to seek professional assistance for repairs related to this code to ensure safety and proper diagnosis.

8. How much does it typically cost to repair the P1BAD Buick code related to the Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to a couple of thousand dollars, including parts and labor.

9. Can the OBDII code P1BAD be intermittent in a Buick Hybrid/Electric Vehicle?

- Yes, the P1BAD code can sometimes be intermittent, depending on the underlying issue causing the high voltage condition in the battery circuit.

10. How can I prevent the recurrence of the OBDII code P1BAD in my Buick Hybrid/Electric Vehicle?

- Regular maintenance, such as checking the high voltage system components and following manufacturer recommendations, can help prevent the recurrence of the P1BAD code in your vehicle.