AutoCodes – Generic – P1E52

P1E52 Code - Hybrid/Electric Vehicle Battery 39 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: P1E52 indicates Hybrid/Electric Vehicle Battery 39 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 1,319

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 Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E52 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 P1E52 - Hybrid/Electric Vehicle Battery 39 Circuit - AutoCodes.com — P1E52 Code - Hybrid/Electric Vehicle Battery 39 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E52?

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

How to Fix the DTC P1E52?

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 P1E52 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?

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Information for Specific Makes

P1E52 Acura — Tandem Motor Cylinder Gearbox Stuck
P1E52 Buick — Hybrid/Electric Vehicle Battery 39 Circuit
P1E52 Cadillac — Hybrid/Electric Vehicle Battery 39 Circuit
P1E52 Chevrolet — Hybrid/Electric Vehicle Battery 39 Circuit
P1E52 GMC — Hybrid/Electric Vehicle Battery 39 Circuit
P1E52 Honda — Tandem Motor Cylinder Gearbox Stuck
P1E52 Saturn — Hybrid/Electric Vehicle Battery 39 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 P1E52 Code

1. What are the common symptoms of OBDII code P1E52 (Hybrid/Electric Vehicle Battery 39 Circuit)?

The common symptoms of code P1E52 may include reduced hybrid system performance, decreased fuel efficiency, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code P1E52?

The possible causes of code P1E52 include issues with the hybrid/electric vehicle battery 39 circuit, such as wiring faults, damaged connectors, or a malfunctioning battery pack.

3. How can I diagnose OBDII code P1E52?

Diagnosing code P1E52 typically involves using a professional diagnostic scanner to retrieve the specific fault code, followed by inspecting the hybrid/electric vehicle battery 39 circuit for any visible damage or loose connections.

4. Can I continue driving with OBDII code P1E52 present?

It is not recommended to continue driving with OBDII code P1E52 active, as it can lead to further damage to the hybrid/electric vehicle system and potentially compromise vehicle safety.

5. How can I repair OBDII code P1E52?

To repair code P1E52, you may need to address the underlying issue with the hybrid/electric vehicle battery 39 circuit, which could involve repairing or replacing damaged wiring, connectors, or components in the battery system.

6. Are there any DIY tips for fixing OBDII code P1E52?

While some basic troubleshooting steps like checking for loose connections or damaged wiring may be performed by DIY enthusiasts, it is recommended to consult a professional technician for accurate diagnosis and repair of code P1E52.

7. Is OBDII code P1E52 specific to certain hybrid or electric vehicle models?

Code P1E52 related to the Hybrid/Electric Vehicle Battery 39 Circuit can vary between different hybrid and electric vehicle models, so it's essential to consult your vehicle's specific diagnostic manual for accurate information.

8. Can a faulty hybrid/electric vehicle battery cause OBDII code P1E52?

Yes, a faulty hybrid/electric vehicle battery or issues within the battery 39 circuit can trigger OBDII code P1E52 and may require attention from a qualified technician for proper diagnosis and repair.

9. How much does it typically cost to repair OBDII code P1E52?

The cost of repairing OBDII code P1E52 can vary depending on the extent of the issue, the specific components requiring repair or replacement, and labor costs associated with fixing the hybrid/electric vehicle battery circuit.

10. What should I do if OBDII code P1E52 keeps recurring after repair?

If OBDII code P1E52 continues to reappear after repair, it is advisable to have a professional technician perform a thorough diagnosis to identify any underlying issues that may be causing the persistent fault code.