AutoCodes – Buick – P1EA3 Buick

P1EA3 Buick Code - Hybrid/EV Battery Interface Control Module 4 Long Term Memory Performance

Quick Answer

The Hybrid/EV Battery Interface Control Module 4 will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Hybrid/EV Battery Interface Control Module 4, Hybrid/EV Battery Interface Control Module 4 harness is open or shorted, Hybrid/EV Battery Interface Control Module 4 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
P1EA3 Buick indicates Hybrid/EV Battery Interface Control Module 4 Long Term Memory Performance.
Common causes
Common causes include Faulty Hybrid/EV Battery Interface Control Module 4, Hybrid/EV Battery Interface Control Module 4 harness is open or shorted, Hybrid/EV Battery Interface Control Module 4 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 825
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2020
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Code P1EA3 Buick Description

The Hybrid/EV Battery Interface Control Module 4 will diagnose its own systems and determine when a fault condition is present. This diagnostic applies to internal microprocessor integrity conditions within the Hybrid/EV Battery Interface Control Module 4. This fault is internal to the Hybrid/EV Battery Interface Control Module 4 and no external circuits are involved.
OBDII Code P1EA3 Buick - Hybrid/EV Battery Interface Control Module 4 Long Term Memory Performance - AutoCodes.com
P1EA3 Buick Code - Hybrid/EV Battery Interface Control Module 4 Long Term Memory Performance

What are the Possible Causes of the DTC P1EA3 Buick?

  • Faulty Hybrid/EV Battery Interface Control Module 4
  • Hybrid/EV Battery Interface Control Module 4 harness is open or shorted
  • Hybrid/EV Battery Interface Control Module 4 circuit poor electrical connection

How to Fix the DTC P1EA3 Buick?

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 P1EA3 Buick 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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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 P1EA3 Buick Code

1. What does the OBDII code P1EA3 mean on a Buick?

The P1EA3 code indicates an issue with the Hybrid/EV Battery Interface Control Module 4's long-term memory performance, which can affect vehicle operation and battery management.

2. What are the common symptoms of code P1EA3 in a Buick?

Symptoms may include warning lights on the dashboard, reduced fuel efficiency, limited EV range, or irregular hybrid system performance.

3. What causes the P1EA3 code to appear?

The code can be triggered by software corruption, a failed control module, issues with the battery interface, or electrical problems such as damaged wiring or poor connections.

4. Can I drive my Buick with the P1EA3 code active?

Driving with this code may be possible, but it is not recommended as it could affect the hybrid/EV system's efficiency and lead to further damage.

5. How is the P1EA3 code diagnosed?

Technicians use a diagnostic scanner to read the code, inspect the Hybrid/EV Battery Interface Control Module, check for software or memory issues, and test the related wiring and connections.

6. Does the P1EA3 code require replacing the control module?

Not always; the issue might be resolved with a software update or reprogramming. However, if the module is faulty, replacement may be necessary.

7. Can a low voltage battery cause the P1EA3 code?

Yes, insufficient voltage or irregular power supply to the module can impact memory performance and trigger the code.

8. How much does it cost to fix the P1EA3 code on a Buick?

Repair costs vary widely depending on whether a software update, wiring repair, or control module replacement is needed, ranging from $100 to over $1,000.

9. Will clearing the P1EA3 code solve the problem?

Simply clearing the code without addressing the underlying issue will likely result in the code returning.

10. How can I prevent the P1EA3 code from occurring again?

Regular maintenance, ensuring proper battery voltage, and addressing hybrid system issues promptly can help prevent this code from reappearing.

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