AutoCodes – Cadillac – P1E9A Cadillac

P1E9A Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Performance

Quick Answer

The hybrid battery interface control module 3 will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 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
P1E9A Cadillac indicates Hybrid/EV Battery Interface Control Module 3 Performance.
Common causes
Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 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 770
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 P1E9A Cadillac Description

The hybrid battery interface control module 3 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 3. This fault is internal to the hybrid battery interface control module 3 and no external circuits are involved.
OBDII Code P1E9A Cadillac - Hybrid/EV Battery Interface Control Module 3 Performance - AutoCodes.com
P1E9A Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Performance

What are the Possible Causes of the DTC P1E9A Cadillac?

  • Faulty Hybrid/EV Battery Interface Control Module 3
  • Hybrid/EV Battery Interface Control Module 3 harness is open or shorted
  • Hybrid/EV Battery Interface Control Module 3 circuit poor electrical connection

How to Fix the DTC P1E9A Cadillac?

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 P1E9A Cadillac 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 P1E9A Cadillac code?

Need more information on how to fix the P1E9A Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E9A Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1E9A Cadillac Code

1. What does the OBDII code P1E9A mean on a Cadillac?

P1E9A indicates a performance issue with the Hybrid/EV Battery Interface Control Module 3, which monitors and manages part of the hybrid or EV battery system.

2. What are the common symptoms of the P1E9A code?

Symptoms may include an illuminated check engine light, reduced hybrid/EV performance, poor fuel economy, or limited electric-only driving capability.

3. What causes the P1E9A code to appear?

Common causes include a malfunctioning Hybrid/EV Battery Interface Control Module 3, wiring or connector issues, battery pack faults, or software-related problems.

4. Can the P1E9A code cause drivability issues?

Yes, it can lead to reduced power output, limited EV mode functionality, or even the vehicle entering a limp mode to prevent further damage.

5. How is the P1E9A code diagnosed?

A technician will use a scan tool to retrieve the code, inspect the Hybrid/EV battery system for faults, check wiring and connectors, and possibly perform further tests on the control module.

6. Can a software update fix the P1E9A code?

In some cases, a software update for the Hybrid/EV Battery Interface Control Module 3 may resolve the issue if the problem is related to outdated software.

7. Is the P1E9A code covered under warranty for Cadillacs?

It might be covered if your vehicle is still under the hybrid/EV system warranty, but you should confirm with your dealer.

8. Can you drive a Cadillac with the P1E9A code?

Driving is possible, but it's not recommended since the issue could worsen or lead to further damage to the hybrid/EV system.

9. How much does it cost to repair the P1E9A code?

Repair costs can vary widely depending on whether the issue is a module replacement, wiring repair, or software update, typically ranging from $200 to $1,500 or more.

10. What should I do if the P1E9A code comes back after repairs?

If the code reappears, have the vehicle re-diagnosed to check for missed issues, defective replacement parts, or additional underlying problems.

Discuss the causes and fixes for P1E9A Cadillac OBDII Code

Code P1E9A Cadillac 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