AutoCodes – Chevrolet – P1B2D Chevrolet

P1B2D Chevrolet Code - Hybrid/Electric Vehicle Battery 32 Circuit

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: P1B2D Chevrolet indicates Hybrid/Electric Vehicle Battery 32 Circuit.
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 924

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B2D 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 P1B2D Chevrolet - Hybrid/Electric Vehicle Battery 32 Circuit - AutoCodes.com — P1B2D Chevrolet Code - Hybrid/Electric Vehicle Battery 32 Circuit

What does this mean?

What are the Possible Causes of the DTC P1B2D Chevrolet?

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

How to Fix the DTC P1B2D 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 P1B2D 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 P1B2D Chevrolet Code

1. What are the common symptoms of OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid battery performance, poor fuel efficiency, and potential drivability issues.

2. What does the OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle indicate?

- The code P1B2D specifically points to a fault in the Hybrid/Electric Vehicle Battery 32 Circuit.

3. What are the possible causes of OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle?

- The code P1B2D can be triggered by issues such as a faulty hybrid battery pack, damaged wiring, or a malfunctioning battery control module.

4. How can I diagnose OBDII code P1B2D in my Chevrolet Hybrid/Electric Vehicle?

- Diagnosing OBDII code P1B2D typically involves using a diagnostic scanner to read the code, inspecting the hybrid battery components, and testing the circuit for continuity.

5. Is it safe to continue driving with OBDII code P1B2D present in my Chevrolet Hybrid/Electric Vehicle?

- It is not recommended to drive with the code P1B2D as it can lead to further damage to the hybrid battery system and potentially affect the vehicle's performance.

6. How can I repair OBDII code P1B2D in my Chevrolet Hybrid/Electric Vehicle?

- Repairing OBDII code P1B2D may involve replacing a faulty hybrid battery pack, repairing damaged wiring, or reprogramming the battery control module.

7. Can I reset OBDII code P1B2D in my Chevrolet Hybrid/Electric Vehicle using a simple reset tool?

- While you can clear the code temporarily with a reset tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Are there any common maintenance tips to prevent OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle?

- Regularly inspecting the hybrid battery system, maintaining proper charging habits, and following the manufacturer's recommended service schedule can help prevent code P1B2D.

9. How much does it typically cost to repair OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle?

- Repair costs for OBDII code P1B2D can vary depending on the extent of the issue, but it is advisable to consult with a professional technician for an accurate estimate.

10. Can OBDII code P1B2D in a Chevrolet Hybrid/Electric Vehicle be a DIY fix, or should I seek professional help?

- While some basic inspections can be done DIY, diagnosing and repairing OBDII code P1B2D often requires specialized knowledge and tools, so seeking professional help is recommended.