AutoCodes – Generic – P1E91

P1E91 Code - Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance

Quick Answer

The hybrid battery interface control module 1 will diagnose its own systems and determine when a fault condition is present. 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
P1E91 indicates Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,315
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P1E91 Description

The hybrid battery interface control module 1 will diagnose its own systems and determine when a fault condition is present. This diagnostic applies to internal microprocessor integrity conditions within the hybrid battery interface control module 1. This fault is internal to the hybrid battery interface control module 1 and no external circuits are involved.
OBDII Code P1E91 - Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance - AutoCodes.com
P1E91 Code - Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance

What are the Possible Causes of the DTC P1E91?

  • 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 P1E91?

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 P1E91 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 P1E91 code?

Need more information on how to fix the P1E91 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E91 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P1E91 Buick β€” Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
  • P1E91 Cadillac β€” Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
  • P1E91 Chevrolet β€” Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
  • P1E91 GMC β€” Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
  • P1E91 Saturn β€” Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance
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 P1E91 Code

1. What are the common symptoms of OBDII code P1E91 related to the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

The common symptoms include poor fuel efficiency, reduced power output, and the illumination of the Check Engine Light.

2. What can cause the OBDII code P1E91 to trigger in relation to the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

Possible causes include faulty battery interface control module, software issues, wiring problems, or issues with the hybrid/EV battery itself.

3. How can I diagnose the OBDII code P1E91 for the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

Diagnosis involves using a professional OBDII scanner to read the code, checking the battery interface control module for faults, inspecting wiring connections, and testing the hybrid/EV battery for performance.

4. What are the repair options for resolving OBDII code P1E91 for the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

Repair options may include reprogramming the battery interface control module, replacing faulty components, fixing wiring issues, or recalibrating the hybrid/EV battery system.

5. Can I continue driving with the OBDII code P1E91 related to the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

It is not recommended to continue driving with this code as it can lead to further damage to the hybrid/EV system and may result in decreased performance and fuel efficiency.

6. How critical is it to address the OBDII code P1E91 for the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance promptly?

It is important to address this code promptly to prevent potential damage to the hybrid/EV system, ensure optimal performance, and avoid more costly repairs in the future.

7. Can a DIY enthusiast repair OBDII code P1E91 related to the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

While some basic troubleshooting can be done by a DIY enthusiast, it is recommended to seek professional help for accurate diagnosis and repair of this code due to the complexity of hybrid/EV systems.

8. How often does OBDII code P1E91 occur in vehicles with Hybrid/EV systems?

OBDII code P1E91 is relatively uncommon but can occur in vehicles with Hybrid/EV systems, especially as they age or if there are underlying issues with the battery interface control module.

9. Are there any preventive maintenance measures to avoid OBDII code P1E91 for the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

Regularly scheduled maintenance, such as checking the hybrid/EV system components, ensuring proper battery health, and updating software, can help prevent issues that may trigger this code.

10. How can a professional technician reset the OBDII code P1E91 for the Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance?

A professional technician can reset the code using a diagnostic scanner after performing the necessary repairs or maintenance to address the root cause of the issue.

Discuss the causes and fixes for P1E91 OBDII Code

Code P1E91 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play