AutoCodes – GMC – P1BDF GMC

P1BDF GMC Code - Hybrid/Electric Vehicle Battery 84 Circuit Low 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: P1BDF GMC indicates Hybrid/Electric Vehicle Battery 84 Circuit Low 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 817

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 P1BDF 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 P1BDF GMC - Hybrid/Electric Vehicle Battery 84 Circuit Low Voltage - AutoCodes.com — P1BDF GMC Code - Hybrid/Electric Vehicle Battery 84 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BDF GMC?

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

How to Fix the DTC P1BDF 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 P1BDF 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 P1BDF GMC Code

1. What are the common symptoms of OBDII code P1BDF GMC (Hybrid/Electric Vehicle Battery 84 Circuit Low Voltage)?

- Common symptoms include reduced power, poor fuel economy, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1BDF GMC?

- Possible causes include a weak or failing hybrid/electric vehicle battery, high electrical loads, faulty battery temperature sensor, or issues with the battery management system.

3. How can I diagnose OBDII code P1BDF GMC?

- Diagnosis involves using a scan tool to read the code, checking the battery voltage and health, inspecting the battery connections, and testing the battery temperature sensor.

4. Can I drive my vehicle with OBDII code P1BDF GMC active?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the hybrid/electric vehicle system.

5. How can I repair OBDII code P1BDF GMC?

- Repair options may include replacing the hybrid/electric vehicle battery, addressing high electrical loads, fixing the battery temperature sensor, or reprogramming the battery management system.

6. Is OBDII code P1BDF GMC a serious issue?

- Yes, this code indicates a potential problem with the hybrid/electric vehicle battery, which can impact the performance and safety of the vehicle.

7. Can a DIY enthusiast fix OBDII code P1BDF GMC?

- While some basic diagnostic steps can be taken by a DIY enthusiast, repairing this code may require specialized tools and expertise, especially when dealing with the high-voltage components of hybrid/electric vehicles.

8. How much does it cost to repair OBDII code P1BDF GMC?

- The cost of repair can vary depending on the underlying cause, but it may involve several hundred to several thousand dollars, especially if the hybrid/electric vehicle battery needs to be replaced.

9. Are there any preventive measures to avoid OBDII code P1BDF GMC?

- Regularly maintaining the hybrid/electric vehicle battery, monitoring electrical loads, and addressing any warning signs promptly can help prevent this code from occurring.

10. Can resetting the OBDII system clear code P1BDF GMC?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.