AutoCodes – Chevrolet – P1B69 Chevrolet

P1B69 Chevrolet Code - Hybrid/Electric Vehicle Battery 45 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: P1B69 Chevrolet indicates Hybrid/Electric Vehicle Battery 45 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 1,086

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 P1B69 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 P1B69 Chevrolet - Hybrid/Electric Vehicle Battery 45 Circuit Performance - AutoCodes.com — P1B69 Chevrolet Code - Hybrid/Electric Vehicle Battery 45 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B69 Chevrolet?

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

How to Fix the DTC P1B69 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 P1B69 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 P1B69 Chevrolet Code

What does the OBDII code P1B69 mean for a Chevrolet vehicle?

The OBDII code P1B69 indicates a performance issue with the hybrid or electric vehicle battery 45 circuit in Chevrolet vehicles, signaling that the battery management system has detected a fault.

What are common symptoms associated with the P1B69 code?

Common symptoms include reduced engine power, the vehicle entering limp mode, warning lights on the dashboard (such as the check engine light), and poor fuel economy in hybrid models.

What could cause the P1B69 code to trigger?

Potential causes include faulty battery management system components, wiring issues or shorts in the battery 45 circuit, a defective battery pack, or poor connections in the electrical system.

How can I diagnose the cause of the P1B69 code?

To diagnose the P1B69 code, use an OBDII scanner to read the code and any related codes, visually inspect the battery 45 circuit wiring and connectors, and check the battery health and performance using appropriate testing equipment.

What are some common repairs for the P1B69 code?

Common repairs may include repairing or replacing damaged wiring, replacing faulty connectors, servicing or replacing the battery pack, or updating the battery management system software.

Can I drive my Chevrolet vehicle if the P1B69 code is present?

While you may be able to drive the vehicle, it is not recommended as performance may be compromised, and continued driving could lead to further damage or a complete failure of the hybrid system.

How can I prevent the P1B69 code from occurring?

Preventive measures include regular maintenance of the hybrid/electric vehicle system, ensuring all connections are clean and secure, and monitoring battery health through routine diagnostic checks.

Is it safe to reset the P1B69 code without repairing the issue?

Resetting the code without addressing the underlying issue is not advisable, as it may lead to further problems and safety concerns; the root cause should be diagnosed and repaired first.

What should I do if the P1B69 code returns after repairs?

If the P1B69 code returns after repairs, further diagnosis is necessary, which may involve checking for additional codes, inspecting the repair work, and testing the battery management system again.

Can a weak battery trigger the P1B69 code?

Yes, a weak or failing hybrid/electric vehicle battery can trigger the P1B69 code, as it may not provide adequate performance or voltage to the battery management system.