AutoCodes – Cadillac – P1E76 Cadillac

P1E76 Cadillac Code - Hybrid/Electric Vehicle Battery 75 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: P1E76 Cadillac indicates Hybrid/Electric Vehicle Battery 75 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 703

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1E76 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 P1E76 Cadillac - Hybrid/Electric Vehicle Battery 75 Circuit - AutoCodes.com — P1E76 Cadillac Code - Hybrid/Electric Vehicle Battery 75 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E76 Cadillac?

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

How to Fix the DTC P1E76 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 P1E76 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.

Need more information about the P1E76 Cadillac code?

Need more information on how to fix the P1E76 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E76 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1E76 Cadillac Code

1. What are the common symptoms of OBDII code P1E76 in a Cadillac hybrid/electric vehicle?

- Common symptoms include reduced electric propulsion, decreased fuel efficiency, and potential inability to start the vehicle.

2. What are the possible causes of OBDII code P1E76 in a Cadillac hybrid/electric vehicle?

- The code P1E76 typically indicates a fault in the Hybrid/Electric Vehicle Battery 75 Circuit, which could be caused by a damaged battery cell, faulty battery management system, or issues with high voltage wiring.

3. How can I diagnose the OBDII code P1E76 in my Cadillac hybrid/electric vehicle?

- Diagnosis involves using an OBDII scanner to read the specific trouble code, inspecting the high voltage battery components for visible damage, and testing the battery cells and related circuitry for proper operation.

4. Is it safe to continue driving my Cadillac with OBDII code P1E76 present?

- It is not recommended to continue driving the vehicle with code P1E76 present, as it can lead to further damage to the high voltage battery system and potentially unsafe driving conditions.

5. Can I reset the OBDII code P1E76 in my Cadillac hybrid/electric vehicle by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is important to address the underlying issue causing the fault to prevent the code from reoccurring.

6. How much does it typically cost to repair OBDII code P1E76 in a Cadillac hybrid/electric vehicle?

- The cost of repair for code P1E76 can vary depending on the specific issue, but it may involve replacing damaged battery components, repairing wiring, or reprogramming the battery management system. Costs can range from a few hundred to a few thousand dollars.

7. Can I perform the repair for OBDII code P1E76 in my Cadillac hybrid/electric vehicle myself?

- Repairing code P1E76 often requires specialized tools and expertise in high voltage systems, so it is recommended to have the repair done by a qualified technician familiar with hybrid and electric vehicle systems.

8. How can I prevent OBDII code P1E76 from occurring in my Cadillac hybrid/electric vehicle?

- To prevent code P1E76, it is essential to regularly maintain the high voltage battery system, follow the manufacturer's recommended service schedule, and address any warning signs or symptoms promptly.

9. Are there any recalls or technical service bulletins related to OBDII code P1E76 in Cadillac hybrid/electric vehicles?

- It is advisable to check with your local Cadillac dealership or the National Highway Traffic Safety Administration (NHTSA) website for any recalls or technical service bulletins related to code P1E76 in your specific vehicle model.

10. Can OBDII code P1E76 in a Cadillac hybrid/electric vehicle affect the overall performance and longevity of the vehicle?

- Yes, unresolved issues related to code P1E76 can impact the overall performance, fuel efficiency, and longevity of the vehicle, as it directly affects the operation of the high voltage battery system essential for hybrid/electric propulsion.