AutoCodes – Chevrolet – P1BBD Chevrolet

P1BBD Chevrolet Code - Hybrid/Electric Vehicle Battery 73 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: P1BBD Chevrolet indicates Hybrid/Electric Vehicle Battery 73 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,009

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BBD 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 P1BBD Chevrolet - Hybrid/Electric Vehicle Battery 73 Circuit Performance - AutoCodes.com — P1BBD Chevrolet Code - Hybrid/Electric Vehicle Battery 73 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BBD Chevrolet?

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

How to Fix the DTC P1BBD 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 P1BBD 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.

Need more information about the P1BBD Chevrolet code?

Need more information on how to fix the P1BBD Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BBD Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1BBD Chevrolet Code

1. What does the OBDII code P1BBD mean for a Chevrolet vehicle?

It indicates an issue with the Hybrid/Electric Vehicle Battery 73 Circuit Performance, commonly related to the hybrid battery or its monitoring systems.

2. What are the symptoms of the P1BBD code in a Chevrolet?

Symptoms may include reduced hybrid system performance, a warning light on the dashboard, poor fuel economy, or the vehicle operating in limp mode.

3. What causes the P1BBD code to be triggered?

Possible causes include a faulty hybrid battery module, issues with the battery control module, damaged wiring or connectors, or software glitches in the vehicleâ€™s control systems.

4. Can I safely drive my Chevrolet with the P1BBD code?

Itâ€™s not recommended, as the code may indicate critical issues with the hybrid battery system that could lead to further damage or reduced vehicle performance.

5. How is the P1BBD code diagnosed?

A technician will use a scan tool to check for additional codes, inspect the hybrid battery and its connections, and test the battery control module for proper operation.

6. What repairs are typically needed for the P1BBD code?

Repairs may include replacing the affected battery module, repairing or replacing damaged wiring, or reprogramming/updating the battery control module software.

7. How much does it cost to fix the P1BBD code on a Chevrolet?

The cost depends on the extent of the issue, ranging from a few hundred dollars for minor wiring repairs to several thousand dollars for hybrid battery replacement.

8. Can a weak 12V battery cause the P1BBD code?

While the 12V battery is not directly related, a weak or failing 12V battery can sometimes affect the hybrid system and should be checked as part of the diagnosis.

9. Is the P1BBD code covered under warranty for a Chevrolet?

Many hybrid battery-related issues are covered under the manufacturerâ€™s hybrid system warranty, which is often longer than the standard warranty. Check your vehicleâ€™s warranty details.

10. Can the P1BBD code be cleared without repairs?

Clearing the code without addressing the root cause is not recommended, as the issue will likely return and could worsen over time.