AutoCodes – Buick – P1B17 Buick

P1B17 Buick Code - Hybrid/Electric Vehicle Battery 27 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: P1B17 Buick indicates Hybrid/Electric Vehicle Battery 27 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 766

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B17 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 P1B17 Buick - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage - AutoCodes.com — P1B17 Buick Code - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B17 Buick?

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

How to Fix the DTC P1B17 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 P1B17 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 P1B17 Buick Code

1. What are common symptoms of OBDII code P1B17 in a Buick hybrid/electric vehicle?

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

2. What can cause the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage code P1B17 in a Buick?

- Possible causes include a weak or failing hybrid battery, issues with the battery management system, or damaged wiring.

3. How serious is the P1B17 code in a Buick hybrid/electric vehicle?

- The P1B17 code should be addressed promptly as it can affect the performance and efficiency of the hybrid/electric system.

4. Can I still drive my Buick with the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage code P1B17?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards.

5. How can I diagnose and repair the P1B17 code in my Buick hybrid/electric vehicle?

- Diagnosis typically involves inspecting the hybrid battery, checking wiring connections, and using a scan tool to monitor voltage levels. Repair may involve replacing the hybrid battery or repairing wiring issues.

6. Will resetting the OBDII code P1B17 in my Buick clear the issue permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return.

7. How much does it cost to repair the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage code P1B17 in a Buick?

- Repair costs can vary depending on the specific cause of the code, but it may range from a few hundred to a few thousand dollars.

8. Can a DIY enthusiast fix the P1B17 code in a Buick, or is it better to take it to a professional mechanic?

- Due to the complexity of hybrid/electric systems, it is recommended to seek assistance from a qualified mechanic or dealership for diagnosing and repairing this code.

9. What steps can I take to prevent the OBDII code P1B17 from occurring in my Buick hybrid/electric vehicle?

- Regular maintenance, such as checking the hybrid battery health, ensuring proper charging, and addressing any warning signs promptly, can help prevent the occurrence of this code.

10. Is the OBDII code P1B17 specific to Buick hybrid/electric vehicles, or can it occur in other makes and models?

- While the specific code may vary, similar issues related to low voltage in hybrid/electric vehicle batteries can occur in other makes and models as well.