AutoCodes – Generic – P1E93

P1E93 Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

Quick Answer

The drive motor battery contains 288 cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1E93 indicates Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 940

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E93 Description

The drive motor battery contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the drive motor battery assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 volts, for a nominal system voltage of 355 volts 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 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1E93 - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit - AutoCodes.com — P1E93 Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E93?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1E93?

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 P1E93 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

P1E93 Buick — Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit
P1E93 Cadillac — Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit
P1E93 Chevrolet — Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit
P1E93 GMC — Hybrid/EV Battery Interface Control Module 1 5 V Reference 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 P1E93 Code

1. What are common symptoms of OBDII code P1E93 related to the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- Common symptoms include the illumination of the check engine light, reduced hybrid system performance, and potential issues with the hybrid or electric vehicle battery.

2. What are the possible causes of OBDII code P1E93 for the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- The code P1E93 can be triggered by issues such as a faulty battery interface control module, wiring problems, a malfunctioning 5V reference circuit, or issues with the hybrid or electric vehicle battery.

3. How can I diagnose the OBDII code P1E93 related to the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, conducting a visual inspection of the battery interface control module and related wiring, and performing voltage tests on the 5V reference circuit.

4. What are the recommended repair tips for addressing OBDII code P1E93 in the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- Repair tips may include checking and repairing any damaged wiring, replacing the battery interface control module if necessary, ensuring proper connections are secure, and verifying the condition of the hybrid or electric vehicle battery.

5. Can OBDII code P1E93 for the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit be cleared/reset?

- Yes, the code can be cleared/reset using a diagnostic scanner after the underlying issue has been diagnosed and repaired. However, it is recommended to address the root cause of the problem first.

6. Are there safety precautions to consider when working on OBDII code P1E93 related to the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- Safety precautions may include disconnecting the vehicle's battery before working on any electrical components, wearing appropriate protective gear, and following manufacturer guidelines and service procedures.

7. How serious is OBDII code P1E93 for the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- The severity of the code P1E93 can vary depending on the underlying cause. It is important to address the issue promptly to prevent potential damage to the hybrid or electric vehicle system.

8. Can I continue driving my vehicle with OBDII code P1E93 present?

- It is not recommended to continue driving the vehicle with the code P1E93 present, as it can indicate underlying issues that may affect the performance and safety of the hybrid or electric vehicle.

9. How much does it typically cost to repair OBDII code P1E93 related to the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- The cost of repair can vary depending on the specific cause of the code P1E93. It may involve simple fixes such as repairing wiring or more complex repairs like replacing the battery interface control module.

10. Can a DIY enthusiast fix OBDII code P1E93 for the Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit?

- While some basic diagnostic steps can be performed by DIY enthusiasts, addressing the root cause of the code P1E93 may require specialized knowledge and tools, so it is recommended to seek professional assistance if needed.