AutoCodes – Cadillac – P1E6D Cadillac

P1E6D Cadillac Code - Hybrid/Electric Vehicle Battery 66 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: P1E6D Cadillac indicates Hybrid/Electric Vehicle Battery 66 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 779

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 P1E6D Cadillac 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 P1E6D Cadillac - Hybrid/Electric Vehicle Battery 66 Circuit - AutoCodes.com — P1E6D Cadillac Code - Hybrid/Electric Vehicle Battery 66 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E6D Cadillac?

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

How to Fix the DTC P1E6D Cadillac?

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 P1E6D Cadillac 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 P1E6D Cadillac Code

1. What are common symptoms of OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, poor fuel efficiency, and potential drivability issues.

2. What does the OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle indicate?

- This code indicates an issue with the Hybrid/Electric Vehicle Battery 66 Circuit.

3. What are possible causes of OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle?

- Possible causes include a faulty battery 66 module, damaged wiring harness, or issues with the battery management system.

4. How can I diagnose the OBDII code P1E6D in my Cadillac Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the battery 66 circuit components, and performing electrical tests.

5. Can I continue driving my Cadillac with the OBDII code P1E6D present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid system and potentially unsafe driving conditions.

6. Are there any temporary fixes for OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle?

- Temporary fixes are not recommended, as addressing the root cause of the issue is necessary for safe and reliable vehicle operation.

7. How much does it typically cost to repair OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the exact cause of the issue, but it may involve replacing the battery 66 module or repairing/replacing damaged wiring, potentially ranging from a few hundred to a thousand dollars.

8. Can I reset the OBDII code P1E6D in my Cadillac Hybrid/Electric Vehicle without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the root cause, as the issue may worsen over time.

9. How can I prevent OBDII code P1E6D from appearing in my Cadillac Hybrid/Electric Vehicle?

- Regular maintenance, such as keeping the hybrid system components in good condition and addressing any warning signs promptly, can help prevent this code from appearing.

10. Is it safe to attempt repairing OBDII code P1E6D in a Cadillac Hybrid/Electric Vehicle without prior experience?

- Given the complexity of hybrid/electric vehicle systems, it is recommended to seek assistance from a qualified technician or dealership to properly diagnose and repair this issue.