AutoCodes – Generic – P1E65

P1E65 Code - Hybrid/Electric Vehicle Battery 58 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: P1E65 indicates Hybrid/Electric Vehicle Battery 58 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 1,207

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 P1E65 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 P1E65 - Hybrid/Electric Vehicle Battery 58 Circuit - AutoCodes.com — P1E65 Code - Hybrid/Electric Vehicle Battery 58 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E65?

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

How to Fix the DTC P1E65?

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 P1E65 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 P1E65 code?

Need more information on how to fix the P1E65 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E65 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1E65 Buick — Hybrid/Electric Vehicle Battery 58 Circuit
P1E65 Cadillac — Hybrid/Electric Vehicle Battery 58 Circuit
P1E65 Chevrolet — Hybrid/Electric Vehicle Battery 58 Circuit
P1E65 GMC — Hybrid/Electric Vehicle Battery 58 Circuit
P1E65 Saturn — Hybrid/Electric Vehicle Battery 58 Circuit

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 P1E65 Code

1. What does OBDII code P1E65 mean?

P1E65 indicates an issue with the Hybrid/Electric Vehicle Battery 58 Circuit, typically related to voltage, communication, or sensor problems in the hybrid battery system.

2. What are the common symptoms of code P1E65?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, limited power output, or the vehicle entering a fail-safe or limp mode.

3. What causes the P1E65 code to trigger?

Common causes include damaged wiring or connectors, a faulty battery module sensor, a failed hybrid battery module, or issues with the battery control module.

4. Can I drive my vehicle with a P1E65 code?

Driving with this code is not recommended, as it may lead to further damage to the hybrid system or reduced vehicle performance.

5. How is the P1E65 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the battery circuit wiring and connectors, and test the battery module and control module for faults.

6. What repairs can fix the P1E65 code?

Repairs may include replacing damaged wiring, repairing or replacing connectors, replacing a faulty battery module sensor, or replacing the hybrid battery module or control module.

7. How much does it cost to fix a P1E65 code?

The repair cost depends on the specific issue, ranging from $100 for minor wiring repairs to $1,000 or more for hybrid battery replacement.

8. Can a weak 12-volt battery cause a P1E65 code?

While unlikely, a weak or failing 12-volt battery can sometimes trigger hybrid system-related codes, so it should be tested as part of the diagnosis.

9. Does clearing the P1E65 code fix the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.

10. Is the P1E65 code specific to certain vehicles?

Yes, this code is often specific to hybrid and electric vehicles from manufacturers like Chevrolet, Toyota, or others with advanced battery management systems.