AutoCodes – Buick – P1E69 Buick

P1E69 Buick Code - Hybrid/Electric Vehicle Battery 62 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: P1E69 Buick indicates Hybrid/Electric Vehicle Battery 62 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 895

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E69 Buick 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 P1E69 Buick - Hybrid/Electric Vehicle Battery 62 Circuit - AutoCodes.com — P1E69 Buick Code - Hybrid/Electric Vehicle Battery 62 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E69 Buick?

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

How to Fix the DTC P1E69 Buick?

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 P1E69 Buick 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 P1E69 Buick Code

1. What does the OBDII code P1E69 mean on a Buick?

P1E69 indicates an issue with the "Hybrid/Electric Vehicle Battery 62 Circuit," which typically refers to a fault in the high-voltage battery system or associated circuitry.

2. What are the symptoms of code P1E69 on a Buick?

Symptoms may include an illuminated check engine light, reduced hybrid or electric performance, decreased fuel efficiency, or the vehicle entering a reduced power mode.

3. What causes the P1E69 code to appear on a Buick?

Common causes include wiring or connection issues within the high-voltage battery system, a failed battery module, or a malfunctioning battery management system sensor.

4. Can I drive my Buick with a P1E69 code?

While the car may still be drivable, it is not recommended, as the issue could lead to further damage to the hybrid or electric system and reduced performance.

5. How is the P1E69 code diagnosed?

A technician will typically use a scan tool to retrieve the code, inspect the battery wiring and connectors, and test the hybrid battery modules and sensors for faults.

6. What repairs can fix the P1E69 code on a Buick?

Repairs may include replacing damaged wiring, repairing or replacing faulty battery modules, or recalibrating the battery management system.

7. Is the P1E69 code covered under warranty for Buicks?

In many cases, hybrid or electric battery-related issues may be covered under the manufacturerâ€™s hybrid or electric vehicle warranty, but coverage varies by model and age.

8. How much does it cost to repair a P1E69 code on a Buick?

Repair costs can vary widely depending on the issue, ranging from $100 for a wiring fix to several thousand dollars if a battery module replacement is necessary.

9. Can a weak 12-volt battery cause the P1E69 code?

A weak 12-volt battery is unlikely to directly cause P1E69, but it can lead to communication errors or other issues that might indirectly trigger the code.

10. How can I prevent the P1E69 code from occurring on my Buick?

Regular maintenance, including inspecting high-voltage battery connections, keeping software up to date, and addressing any warning lights promptly, can help prevent this issue.