AutoCodes – Chevrolet – P1B65 Chevrolet

P1B65 Chevrolet Code - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage

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: P1B65 Chevrolet indicates Hybrid/Electric Vehicle Battery 43 Circuit High Voltage.
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 968

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 P1B65 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 P1B65 Chevrolet - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage - AutoCodes.com — P1B65 Chevrolet Code - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B65 Chevrolet?

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

How to Fix the DTC P1B65 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 P1B65 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 P1B65 Chevrolet Code

1. What are the common symptoms of OBDII code P1B65 on a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced vehicle performance, check engine light illumination, and potential issues with the hybrid/electric battery system.

2. What are the possible causes of OBDII code P1B65 on a Chevrolet hybrid/electric vehicle?

- The code may be triggered by a high voltage condition in the hybrid/electric vehicle battery system, which could be caused by a malfunctioning battery pack, faulty high voltage wiring, or issues with the battery management system.

3. How can I diagnose OBDII code P1B65 on my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code, inspecting the battery system components for any visible damage, and conducting voltage tests to pinpoint the high voltage circuit issue.

4. Is it safe to drive my Chevrolet hybrid/electric vehicle with OBDII code P1B65 present?

- It is not recommended to drive the vehicle with this code present, as it could potentially lead to further damage to the battery system or other components. It's best to have the issue diagnosed and repaired promptly.

5. Can I repair OBDII code P1B65 on my Chevrolet hybrid/electric vehicle myself?

- Repairing this code may require specialized knowledge and tools due to the high voltage nature of the system. It is recommended to seek assistance from a qualified hybrid/electric vehicle technician or dealership.

6. What are some general tips for maintaining the hybrid/electric battery system to prevent OBDII code P1B65 from occurring?

- Regularly inspecting the battery system for any signs of wear or damage, following the manufacturer's recommended maintenance schedule, and avoiding overcharging the battery can help prevent issues like code P1B65.

7. Does OBDII code P1B65 affect the overall performance and efficiency of a Chevrolet hybrid/electric vehicle?

- Yes, this code can negatively impact the vehicle's performance and efficiency, as it indicates a problem with the high voltage circuit in the battery system, which is crucial for proper operation of the vehicle.

8. How much does it typically cost to repair OBDII code P1B65 on a Chevrolet hybrid/electric vehicle?

- The cost of repair can vary depending on the specific cause of the code and the extent of the damage. It is advisable to obtain a diagnosis from a professional technician to get an accurate estimate.

9. Can OBDII code P1B65 be a recurring issue on a Chevrolet hybrid/electric vehicle?

- If the root cause of the code is not properly addressed during repair, it is possible for the issue to recur. It is important to ensure that all related components are thoroughly inspected and repaired to prevent future occurrences.

10. Are there any safety precautions to keep in mind when dealing with OBDII code P1B65 on a Chevrolet hybrid/electric vehicle?

- When working on the high voltage components related to this code, it is crucial to follow all safety procedures outlined by the manufacturer and to avoid coming into direct contact with high voltage wiring or components to prevent potential electric shock hazards.