AutoCodes – GMC – P1BD4 GMC

P1BD4 GMC Code - Hybrid/Electric Vehicle Battery 80 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: P1BD4 GMC indicates Hybrid/Electric Vehicle Battery 80 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 893

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BD4 GMC 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 P1BD4 GMC - Hybrid/Electric Vehicle Battery 80 Circuit High Voltage - AutoCodes.com — P1BD4 GMC Code - Hybrid/Electric Vehicle Battery 80 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BD4 GMC?

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

How to Fix the DTC P1BD4 GMC?

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 P1BD4 GMC 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 P1BD4 GMC Code

1. What are common symptoms of OBDII code P1BD4 GMC related to the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage issue?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential warning lights on the dashboard.

2. What are some possible causes of the OBDII code P1BD4 GMC indicating a High Voltage issue in the Hybrid/Electric Vehicle Battery 80 Circuit?

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

3. How can I diagnose the OBDII code P1BD4 GMC related to the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage problem?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code and conducting a thorough inspection of the high-voltage battery system components.

4. Is it safe to continue driving with the OBDII code P1BD4 GMC triggered for the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage issue?

- It is not recommended to continue driving the vehicle with this fault code active, as it may lead to further damage to the high-voltage system and potentially pose safety risks.

5. What are some repair tips for addressing the OBDII code P1BD4 GMC associated with the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage fault?

- Repair tips may include checking and repairing any damaged wiring, testing the high-voltage battery pack for faults, and ensuring proper connections in the high-voltage circuit.

6. Can resetting the fault code resolve the OBDII code P1BD4 GMC related to the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage problem?

- Resetting the fault code may temporarily clear the warning light, but it is essential to address the underlying issue causing the fault code to prevent it from reoccurring.

7. How serious is the OBDII code P1BD4 GMC indicating a High Voltage problem in the Hybrid/Electric Vehicle Battery 80 Circuit?

- This fault code is considered serious as it pertains to the high-voltage components of the hybrid/electric vehicle system, which are crucial for the vehicle's operation and safety.

8. Can a DIY enthusiast repair the OBDII code P1BD4 GMC associated with the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage issue?

- Due to the complexity and high-voltage nature of the components involved, it is recommended to seek professional assistance or specialized hybrid/electric vehicle repair services for this issue.

9. Are there any recalls or technical service bulletins related to the OBDII code P1BD4 GMC concerning the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage issue?

- It is advisable to check with the vehicle manufacturer or authorized service centers for any relevant recalls or technical service bulletins related to this fault code for specific guidance.

10. How can I prevent the recurrence of the OBDII code P1BD4 GMC linked to the Hybrid/Electric Vehicle Battery 80 Circuit High Voltage issue in the future?

- Regular maintenance of the high-voltage system, prompt diagnosis of any warning lights or symptoms, and addressing any related issues promptly can help prevent the recurrence of this fault code.