AutoCodes – Generic – P1E63

P1E63 Code - Hybrid/Electric Vehicle Battery 56 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: P1E63 indicates Hybrid/Electric Vehicle Battery 56 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 1,025

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 P1E63 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 P1E63 - Hybrid/Electric Vehicle Battery 56 Circuit - AutoCodes.com — P1E63 Code - Hybrid/Electric Vehicle Battery 56 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E63?

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

How to Fix the DTC P1E63?

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 P1E63 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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Need Help with the Code?

Get the P1E63 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1E63 Acura — Brake Pedal Stroke Sensor Signal Stuck
P1E63 Buick — Hybrid/Electric Vehicle Battery 56 Circuit
P1E63 Cadillac — Hybrid/Electric Vehicle Battery 56 Circuit
P1E63 Chevrolet — Hybrid/Electric Vehicle Battery 56 Circuit
P1E63 GMC — Hybrid/Electric Vehicle Battery 56 Circuit
P1E63 Honda — Brake Pedal Stroke Sensor Signal Stuck
P1E63 Saturn — Hybrid/Electric Vehicle Battery 56 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 P1E63 Code

1. What does the OBDII code P1E63 mean?

P1E63 indicates an issue with the Hybrid/Electric Vehicle Battery 56 Circuit, which typically relates to communication or voltage irregularities in one of the battery cells or circuits.

2. What are the common symptoms of the P1E63 code?

Symptoms may include the illumination of the check engine light, reduced hybrid or EV performance, decreased fuel efficiency, or the vehicle entering a limited power mode.

3. What causes the P1E63 code to appear?

Common causes include faulty battery cells, damaged wiring or connectors in the Battery 56 Circuit, a malfunctioning battery control module, or software issues.

4. Can I drive my vehicle with the P1E63 code active?

While the vehicle may still operate, driving with this code can lead to reduced performance and may cause further damage to the hybrid or EV battery system. Itâ€™s best to address the issue promptly.

5. How is the P1E63 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the Battery 56 Circuit wiring and connectors, test the voltage of the affected cell, and check the battery control module for faults.

6. What repairs are needed to fix the P1E63 code?

Repairs may include replacing damaged wiring or connectors, repairing or replacing the affected battery cell, updating software, or replacing the battery control module if necessary.

7. How much does it cost to fix the P1E63 code?

Repair costs can vary depending on the exact issue but may range from $150 for simple wiring repairs to over $1,000 for battery cell replacement or control module repairs.

8. Can a weak 12V auxiliary battery cause the P1E63 code?

In some cases, a weak or failing 12V auxiliary battery can contribute to communication issues within the hybrid battery system, potentially triggering this code.

9. Does the P1E63 code always mean the battery needs replacement?

No, the code does not always indicate total battery failure. It may be related to a specific circuit, wiring issue, or battery module that can be repaired or replaced individually.

10. Is resetting the code enough to fix the P1E63 issue?

Resetting the code might temporarily clear the warning, but if the underlying problem isnâ€™t resolved, the code will likely return.