AutoCodes – Buick – P1B16 Buick

P1B16 Buick Code - Hybrid/Electric Vehicle Battery 27 Circuit Performance

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: P1B16 Buick indicates Hybrid/Electric Vehicle Battery 27 Circuit Performance.
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 822

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 P1B16 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 P1B16 Buick - Hybrid/Electric Vehicle Battery 27 Circuit Performance - AutoCodes.com — P1B16 Buick Code - Hybrid/Electric Vehicle Battery 27 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B16 Buick?

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

How to Fix the DTC P1B16 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 P1B16 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 P1B16 Buick Code

1. What are common symptoms of OBDII code P1B16 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced battery performance, decreased fuel efficiency, and potential issues with the hybrid/electric system.

2. What are the possible causes of OBDII code P1B16 in a Buick Hybrid/Electric Vehicle?

- Possible causes may include a faulty battery pack, damaged battery cells, wiring issues, or problems with the battery management system.

3. How can I diagnose OBDII code P1B16 in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code and then inspecting the hybrid/electric battery system for any visible issues or abnormalities.

4. Is it safe to continue driving with OBDII code P1B16 in my Buick Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid/electric system and potentially unsafe driving conditions.

5. What are some repair tips for resolving OBDII code P1B16 in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty battery cells, recalibrating the battery management system, or seeking professional assistance from a certified technician.

6. Can I reset OBDII code P1B16 in my Buick Hybrid/Electric Vehicle using a simple reset tool?

- While you may be able to temporarily clear the code with a reset tool, it is important to address the underlying issue causing the code to prevent future occurrences and ensure proper functioning of the hybrid/electric system.

7. How much does it typically cost to repair OBDII code P1B16 in a Buick Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, especially if battery components need to be replaced.

8. What are the long-term consequences of ignoring OBDII code P1B16 in a Buick Hybrid/Electric Vehicle?

- Ignoring this code can lead to decreased performance, reduced fuel efficiency, potential damage to other hybrid/electric components, and even safety hazards while driving.

9. Are there any preventative maintenance steps I can take to avoid OBDII code P1B16 in my Buick Hybrid/Electric Vehicle?

- Regularly inspecting and maintaining the hybrid/electric battery system, following manufacturer recommendations for service intervals, and addressing any issues promptly can help prevent this code from appearing.

10. How do I know if OBDII code P1B16 in my Buick Hybrid/Electric Vehicle has been successfully resolved?

- After repairing the underlying issue causing the code, you can use an OBDII scanner to clear the code and monitor the system for any recurrence. If the code does not reappear, it is likely that the issue has been resolved.