AutoCodes – Generic – P1B16

P1B16 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 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 1,394

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

What does this mean?

What are the Possible Causes of the DTC P1B16?

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

How to Fix the DTC P1B16?

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 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 P1B16 code?

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Need Help with the Code?

Get the P1B16 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B16 Buick — Hybrid/Electric Vehicle Battery 27 Circuit Performance
P1B16 Cadillac — Hybrid/Electric Vehicle Battery 27 Circuit Performance
P1B16 Chevrolet — Hybrid/Electric Vehicle Battery 27 Circuit Performance
P1B16 GMC — Hybrid/Electric Vehicle Battery 27 Circuit Performance
P1B16 Saturn — Hybrid/Electric Vehicle Battery 27 Circuit Performance

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 Code

1. What are the common symptoms of OBDII code P1B16 (Hybrid/Electric Vehicle Battery 27 Circuit Performance)?

- Common symptoms include decreased fuel efficiency, loss of power, and illuminated warning lights on the dashboard related to the hybrid/electric system.

2. What are the possible causes of OBDII code P1B16?

- The code P1B16 can be triggered by issues such as a faulty battery pack, damaged wiring in the battery circuit, or a problem with the battery management system.

3. How can I diagnose the OBDII code P1B16?

- Diagnosing the code P1B16 typically involves using a scan tool to retrieve the specific fault codes, inspecting the battery pack and related components for visible damage, and testing the battery circuit for continuity and proper voltage levels.

4. Can I continue driving my vehicle with the OBDII code P1B16 present?

- It is not recommended to continue driving the vehicle with the code P1B16 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 fixing OBDII code P1B16?

- Repairing the code P1B16 may involve replacing the faulty battery pack, repairing damaged wiring, or reprogramming the battery management system. It is recommended to consult a professional mechanic with experience in hybrid/electric vehicles for proper diagnosis and repair.

6. Will resetting the OBDII code P1B16 make it go away permanently?

- Resetting the code P1B16 may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem to prevent future issues.

7. Are there any safety precautions to consider when dealing with OBDII code P1B16?

- When working on the hybrid/electric system related to code P1B16, always follow manufacturer safety guidelines and consider high-voltage risks. It is advisable to disconnect the hybrid/electric system before performing any repairs.

8. How much does it typically cost to repair OBDII code P1B16?

- The cost of repairing code P1B16 can vary depending on the extent of the damage, the parts needed for replacement, and the labor rates of the repair shop. It is recommended to obtain quotes from different mechanics for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1B16 at home?

- While some basic troubleshooting steps can be taken at home, repairing code P1B16 in a hybrid/electric vehicle often requires specialized knowledge and tools. It is best to seek professional help to ensure proper diagnosis and repair.

10. Is it possible to prevent OBDII code P1B16 from occurring in the future?

- Regular maintenance of the hybrid/electric system, including battery inspections and software updates, can help prevent code P1B16 from occurring. Following the manufacturer's recommended service schedule can also aid in early detection of potential issues.