AutoCodes – Buick – P1E68 Buick

P1E68 Buick Code - Hybrid/Electric Vehicle Battery 61 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: P1E68 Buick indicates Hybrid/Electric Vehicle Battery 61 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 696

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 P1E68 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 P1E68 Buick - Hybrid/Electric Vehicle Battery 61 Circuit - AutoCodes.com — P1E68 Buick Code - Hybrid/Electric Vehicle Battery 61 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E68 Buick?

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

How to Fix the DTC P1E68 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 P1E68 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 P1E68 Buick Code

1. What are the common symptoms of OBDII code P1E68 in a Buick hybrid/electric vehicle?

- Common symptoms include reduced battery performance, warning lights on the dashboard, and difficulty starting the vehicle.

2. What does the OBDII code P1E68 Buick indicate?

- The code P1E68 indicates an issue with the Hybrid/Electric Vehicle Battery 61 Circuit in the vehicle.

3. What are the possible causes of OBDII code P1E68 in a Buick hybrid/electric vehicle?

- Possible causes include damaged wiring, faulty battery cells, issues with the battery management system, or a malfunctioning control module.

4. How can I diagnose the OBDII code P1E68 in my Buick hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to read the code, inspecting the battery connections, and testing the battery cells for voltage and capacity.

5. Can I continue driving my Buick with OBDII code P1E68 present?

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

6. How can I repair OBDII code P1E68 in my Buick hybrid/electric vehicle?

- Repair options may include repairing or replacing damaged wiring, replacing faulty battery cells, recalibrating the battery management system, or replacing the control module.

7. Is it possible to reset the OBDII code P1E68 without repairing the issue?

- While clearing the code may temporarily turn off the warning lights, it is important to address the underlying issue to prevent further problems.

8. How much does it typically cost to repair OBDII code P1E68 in a Buick hybrid/electric vehicle?

- Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced, but it is recommended to consult a professional for an accurate estimate.

9. Are there any preventive maintenance tips to avoid OBDII code P1E68 in a Buick hybrid/electric vehicle?

- Regularly inspecting the battery connections, monitoring battery performance, and following the manufacturer's maintenance schedule can help prevent issues that trigger this code.

10. Can a DIY enthusiast with automotive knowledge repair OBDII code P1E68 in a Buick hybrid/electric vehicle?

- While some basic troubleshooting and repairs may be possible for experienced DIY enthusiasts, dealing with hybrid/electric vehicle systems often requires specialized training and equipment, so professional assistance is recommended.