AutoCodes – Generic – P1E5A

P1E5A Code - Hybrid/Electric Vehicle Battery 47 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: P1E5A indicates Hybrid/Electric Vehicle Battery 47 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 1,096

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 P1E5A 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 P1E5A - Hybrid/Electric Vehicle Battery 47 Circuit - AutoCodes.com — P1E5A Code - Hybrid/Electric Vehicle Battery 47 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E5A?

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

How to Fix the DTC P1E5A?

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 P1E5A 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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Information for Specific Makes

P1E5A Buick — Hybrid/Electric Vehicle Battery 47 Circuit
P1E5A Cadillac — Hybrid/Electric Vehicle Battery 47 Circuit
P1E5A Chevrolet — Hybrid/Electric Vehicle Battery 47 Circuit
P1E5A GMC — Hybrid/Electric Vehicle Battery 47 Circuit
P1E5A Saturn — Hybrid/Electric Vehicle Battery 47 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 P1E5A Code

1. What does OBDII code P1E5A mean?

Code P1E5A indicates an issue with the Hybrid/Electric Vehicle Battery 47 Circuit, which may involve a fault in the battery's voltage sensor, wiring, or control module.

2. What are the common symptoms of code P1E5A?

Symptoms may include an illuminated check engine light, reduced hybrid or EV performance, limited power output, or a warning message on the dashboard.

3. What causes code P1E5A to appear?

The code can be triggered by faulty battery voltage sensors, damaged wiring or connectors in the battery circuit, or a malfunctioning hybrid battery control module.

4. Can I drive my car with code P1E5A active?

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

5. How is code P1E5A diagnosed?

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

6. What repairs are needed to fix code P1E5A?

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

7. Can a dead 12V battery cause code P1E5A?

While unlikely, a weak or dead 12V battery could indirectly affect the hybrid system and should be tested to rule it out as a contributing factor.

8. Is code P1E5A exclusive to a specific vehicle model?

No, this code can appear in various hybrid or electric vehicles, but the exact diagnostic and repair procedures may differ depending on the make and model.

9. How much does it cost to repair code P1E5A?

Repair costs can vary widely depending on the issue, ranging from $100 for minor wiring repairs to over $1,000 if the hybrid battery control module needs replacement.

10. Can I fix code P1E5A myself?

If you have experience with hybrid or EV systems, you might address simple issues like checking connectors or replacing sensors, but more complex repairs should be handled by a qualified technician.