AutoCodes – Chevrolet – P1B25 Chevrolet

P1B25 Chevrolet Code - Hybrid/Electric Vehicle Battery 32 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: P1B25 Chevrolet indicates Hybrid/Electric Vehicle Battery 32 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 1,063

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 P1B25 Chevrolet 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 P1B25 Chevrolet - Hybrid/Electric Vehicle Battery 32 Circuit Performance - AutoCodes.com — P1B25 Chevrolet Code - Hybrid/Electric Vehicle Battery 32 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B25 Chevrolet?

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

How to Fix the DTC P1B25 Chevrolet?

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 P1B25 Chevrolet 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 P1B25 Chevrolet Code

1. What are the common symptoms of OBDII code P1B25 Chevrolet related to Hybrid/Electric Vehicle Battery 32 Circuit Performance?

- Common symptoms include reduced electric vehicle range, difficulty starting the vehicle, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code P1B25 Chevrolet indicating Hybrid/Electric Vehicle Battery 32 Circuit Performance?

- Possible causes may include a faulty battery cell, issues with the battery management system, poor electrical connections, or a defective battery control module.

3. How can I diagnose the OBDII code P1B25 Chevrolet on my hybrid/electric vehicle?

- Diagnosis typically involves using a specialized OBDII scanner to retrieve the fault code, inspecting the battery pack and related components for visible damage, and conducting a comprehensive electrical system test.

4. Is it safe to continue driving with OBDII code P1B25 Chevrolet triggered on my Chevrolet hybrid/electric vehicle?

- It is not recommended to continue driving with this fault code active, as it can lead to further damage to the battery system and potential safety hazards. It is best to have the issue diagnosed and repaired promptly.

5. Can I repair OBDII code P1B25 Chevrolet related to Hybrid/Electric Vehicle Battery 32 Circuit Performance myself?

- Repairing this code may require specialized knowledge and tools, so it is advisable to seek assistance from a qualified technician or dealership experienced in hybrid/electric vehicle systems.

6. How much does it typically cost to repair OBDII code P1B25 Chevrolet on a Chevrolet hybrid/electric vehicle?

- Repair costs can vary depending on the underlying cause of the code and the specific repairs needed. It is recommended to obtain a diagnostic evaluation from a professional to determine an accurate cost estimate.

7. Are there any maintenance tips to prevent OBDII code P1B25 Chevrolet from recurring in the future?

- Regularly maintaining the hybrid/electric vehicle's battery system, following the manufacturer's recommended service schedule, and avoiding overcharging or deep discharging the battery can help prevent this code from recurring.

8. Can a low or drained hybrid/electric vehicle battery cause OBDII code P1B25 Chevrolet to appear?

- Yes, a low or drained battery can contribute to triggering this fault code as it may impact the overall performance and efficiency of the hybrid/electric vehicle's battery system.

9. How urgent is it to address OBDII code P1B25 Chevrolet indicating Hybrid/Electric Vehicle Battery 32 Circuit Performance?

- It is important to address this code promptly to prevent further damage to the battery system and ensure the safe operation of the hybrid/electric vehicle.

10. Is there a warranty or extended coverage for repairing OBDII code P1B25 Chevrolet on a Chevrolet hybrid/electric vehicle?

- Depending on the vehicle's warranty status and any existing extended coverage, repairs related to this fault code may be covered by the manufacturer. It is advisable to check with the dealership for specific warranty information.