AutoCodes – Chevrolet – P1B72 Chevrolet

P1B72 Chevrolet Code - Hybrid/Electric Vehicle Battery 48 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: P1B72 Chevrolet indicates Hybrid/Electric Vehicle Battery 48 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 860

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 P1B72 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 P1B72 Chevrolet - Hybrid/Electric Vehicle Battery 48 Circuit Performance - AutoCodes.com — P1B72 Chevrolet Code - Hybrid/Electric Vehicle Battery 48 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B72 Chevrolet?

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

How to Fix the DTC P1B72 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 P1B72 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 P1B72 Chevrolet code?

Need more information on how to fix the P1B72 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B72 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 P1B72 Chevrolet Code

1. What are the common symptoms of OBDII code P1B72 Chevrolet related to Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Common symptoms may include decreased electric vehicle range, poor battery performance, and potential warning lights on the dashboard.

2. What are some possible causes of OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Possible causes may include issues with the battery pack, high voltage wiring, battery management system, or faulty hybrid battery components.

3. How can I diagnose OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the battery voltage levels, inspecting high voltage wiring, and testing the battery modules.

4. Is it safe to continue driving with OBDII code P1B72 Chevrolet related to Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the hybrid/electric vehicle battery system and potentially compromise safety.

5. What are some repair tips for addressing OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Repair tips may include checking and tightening battery connections, replacing faulty battery modules, recalibrating the battery management system, and ensuring proper insulation on high voltage wiring.

6. Can OBDII code P1B72 Chevrolet be cleared/reset without fixing the underlying issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely persist and trigger the code again until properly repaired.

7. How much does it typically cost to repair OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Repair costs can vary depending on the extent of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventive measures to avoid OBDII code P1B72 Chevrolet related to Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- Regular maintenance, monitoring battery health, avoiding extreme temperature conditions, and following manufacturer recommendations can help prevent issues leading to this code.

9. Can a DIY enthusiast fix OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- While some basic checks and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing complex hybrid/electric vehicle battery issues should be left to experienced professionals due to safety concerns.

10. How long does it take to repair OBDII code P1B72 Chevrolet for Hybrid/Electric Vehicle Battery 48 Circuit Performance?

- The repair time can vary based on the specific issue, availability of parts, and the expertise of the technician, but it may take a few hours to a day or more to fully address the code and related problems.