AutoCodes – Generic – P1B19

P1B19 Code - Hybrid/Electric Vehicle Battery 28 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: P1B19 indicates Hybrid/Electric Vehicle Battery 28 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 1,007

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 P1B19 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 P1B19 - Hybrid/Electric Vehicle Battery 28 Circuit Performance - AutoCodes.com — P1B19 Code - Hybrid/Electric Vehicle Battery 28 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B19?

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

How to Fix the DTC P1B19?

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 P1B19 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 P1B19 code?

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Need Help with the Code?

Get the P1B19 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B19 Buick — Hybrid/Electric Vehicle Battery 28 Circuit Performance
P1B19 Cadillac — Hybrid/Electric Vehicle Battery 28 Circuit Performance
P1B19 Chevrolet — Hybrid/Electric Vehicle Battery 28 Circuit Performance
P1B19 GMC — Hybrid/Electric Vehicle Battery 28 Circuit Performance
P1B19 Saturn — Hybrid/Electric Vehicle Battery 28 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 P1B19 Code

1. What are the common symptoms of OBDII code P1B19 related to Hybrid/Electric Vehicle Battery 28 Circuit Performance?

The common symptoms include reduced electric vehicle range, poor battery performance, and potential warning lights on the dashboard.

2. What are the possible causes of OBDII code P1B19 Hybrid/Electric Vehicle Battery 28 Circuit Performance?

Possible causes may include a faulty battery pack, issues with the battery management system, damaged wiring, or a malfunctioning battery control module.

3. How can I diagnose the OBDII code P1B19 on my hybrid or electric vehicle?

Diagnosing this code typically requires advanced diagnostic tools that can communicate with the vehicle's battery management system to pinpoint the exact issue.

4. Can I still drive my hybrid or electric vehicle with OBDII code P1B19 present?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the battery system and potentially compromise the vehicle's performance.

5. How can I reset the OBDII code P1B19 on my hybrid or electric vehicle?

Resetting the code typically involves fixing the underlying issue causing the fault, which may require professional diagnosis and repair by a qualified technician.

6. Are there any DIY repair tips for addressing OBDII code P1B19 related to Hybrid/Electric Vehicle Battery 28 Circuit Performance?

DIY repair is generally not recommended for this code, as it involves complex electrical components and systems that require specialized knowledge and tools.

7. How much does it cost to repair OBDII code P1B19 Hybrid/Electric Vehicle Battery 28 Circuit Performance?

The cost of repair can vary depending on the specific issue causing the fault, but it may involve replacing components in the battery system, which can be expensive.

8. What are the potential long-term consequences of ignoring OBDII code P1B19 on a hybrid or electric vehicle?

Ignoring this code can lead to decreased battery performance, reduced electric vehicle range, and potential safety hazards due to a compromised battery system.

9. Is it safe to drive my hybrid or electric vehicle to the repair shop with OBDII code P1B19 present?

It is best to have the vehicle towed to the repair shop to prevent further damage to the battery system and ensure safety while driving with this code present.

10. Can OBDII code P1B19 be a recurring issue in hybrid or electric vehicles?

Yes, if the underlying problem causing the code is not properly addressed, it can recur and potentially cause more damage to the battery system over time.