AutoCodes – Generic – P1BD1

P1BD1 Code - Hybrid/Electric Vehicle Battery 79 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: P1BD1 indicates Hybrid/Electric Vehicle Battery 79 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 998

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 P1BD1 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 P1BD1 - Hybrid/Electric Vehicle Battery 79 Circuit High Voltage - AutoCodes.com — P1BD1 Code - Hybrid/Electric Vehicle Battery 79 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BD1?

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

How to Fix the DTC P1BD1?

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 P1BD1 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.

Need more information about the P1BD1 code?

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Need Help with the Code?

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Information for Specific Makes

P1BD1 Buick — Hybrid/Electric Vehicle Battery 79 Circuit High Voltage
P1BD1 Cadillac — Hybrid/Electric Vehicle Battery 79 Circuit High Voltage
P1BD1 Chevrolet — Hybrid/Electric Vehicle Battery 79 Circuit High Voltage
P1BD1 GMC — Hybrid/Electric Vehicle Battery 79 Circuit High Voltage
P1BD1 Saturn — Hybrid/Electric Vehicle Battery 79 Circuit High Voltage

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 P1BD1 Code

1. What are common symptoms of OBDII code P1BD1 (Hybrid/Electric Vehicle Battery 79 Circuit High Voltage)?

- Common symptoms include illuminated check engine light, reduced hybrid system performance, and potential drivability issues.

2. What causes OBDII code P1BD1 to be triggered?

- This code is typically triggered by a high voltage condition detected in the hybrid/electric vehicle battery 79 circuit.

3. How serious is OBDII code P1BD1 (Hybrid/Electric Vehicle Battery 79 Circuit High Voltage)?

- This code should be addressed promptly as it can affect the proper functioning of the hybrid or electric vehicle system.

4. Can driving with OBDII code P1BD1 (Hybrid/Electric Vehicle Battery 79 Circuit High Voltage) cause further damage?

- Continuing to drive with this code may lead to more severe issues with the hybrid/electric vehicle system and should be avoided.

5. How can OBDII code P1BD1 be diagnosed?

- Proper diagnosis typically involves using a scan tool to retrieve the code, conducting a visual inspection of the battery and related components, and performing voltage tests.

6. What are some repair tips for addressing OBDII code P1BD1?

- Repair tips may include checking the battery connections, inspecting for any signs of corrosion or damage, and testing the battery voltage levels.

7. Is it safe to attempt DIY repairs for OBDII code P1BD1 (Hybrid/Electric Vehicle Battery 79 Circuit High Voltage)?

- Due to the complex nature of hybrid/electric vehicle systems, it is recommended to have this issue diagnosed and repaired by a qualified technician.

8. How much does it typically cost to fix OBDII code P1BD1?

- The cost of repairs for this code can vary depending on the exact cause of the high voltage condition and the specific components that require attention.

9. Can resetting the OBDII system clear code P1BD1?

- While clearing the code may temporarily turn off the check engine light, it is important to address the underlying issue triggering the code to prevent further issues.

10. Are there any precautions to take when dealing with OBDII code P1BD1 in a hybrid or electric vehicle?

- When working on the hybrid/electric vehicle system, always follow manufacturer guidelines, disconnect the high-voltage system properly, and exercise caution to prevent electrical hazards.