AutoCodes – Cadillac – P1E6F Cadillac

P1E6F Cadillac Code - Hybrid/Electric Vehicle Battery 68 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: P1E6F Cadillac indicates Hybrid/Electric Vehicle Battery 68 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 723

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 P1E6F 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 P1E6F Cadillac - Hybrid/Electric Vehicle Battery 68 Circuit - AutoCodes.com — P1E6F Cadillac Code - Hybrid/Electric Vehicle Battery 68 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E6F Cadillac?

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

How to Fix the DTC P1E6F 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 P1E6F 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 P1E6F Cadillac Code

1. What does the OBDII code P1E6F mean on a Cadillac?

The P1E6F code indicates an issue with the Hybrid/Electric Vehicle Battery 68 Circuit, often related to communication or performance irregularities in the high-voltage battery system.

2. What are the common symptoms of the P1E6F code in a Cadillac?

Symptoms may include reduced fuel efficiency, limited electric drive functionality, warning lights on the dashboard, and possible drivability issues.

3. What causes the P1E6F code to trigger?

This code can be caused by damaged wiring, faulty battery control modules, a malfunctioning battery sensor, or internal issues within the hybrid battery pack.

4. Can I still drive my Cadillac with the P1E6F code?

While you may still be able to drive the vehicle, itâ€™s not recommended as it can lead to further damage or reduced performance, especially if the hybrid system is compromised.

5. How is the P1E6F code diagnosed in a Cadillac?

A technician will use a scan tool to check for additional codes, inspect the battery and related circuits, and perform voltage and continuity tests on the affected components.

6. What repairs are typically needed for the P1E6F code?

Repairs may include replacing damaged wiring or connectors, reprogramming or replacing the battery control module, or servicing the hybrid battery pack if itâ€™s failing.

7. How much does it cost to fix the P1E6F code on a Cadillac?

Repair costs can vary but may range from $200 to $1,000 or more depending on whether it's a minor wiring issue or a hybrid battery component that needs replacement.

8. Can a dead 12V battery cause the P1E6F code to appear?

A weak or dead 12V battery might cause communication issues with the hybrid system, potentially triggering this code. Ensuring the 12V battery is in good condition is a good first step.

9. Does the P1E6F code mean the hybrid battery needs to be replaced?

Not necessarily. The issue could be with the circuit or control module rather than the battery itself. Proper diagnosis is crucial to determine the exact cause.

10. Can clearing the P1E6F code fix the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return. Proper diagnosis and repair are necessary.