AutoCodes – Buick – P1EBA Buick

P1EBA Buick Code - Hybrid/EV Battery Low Resolution Current Sensor Exceeded Learning Limit

Quick Answer

The hybrid/EV battery current sensor is mounted inside the hybrid/EV battery pack. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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: P1EBA Buick indicates Hybrid/EV Battery Low Resolution Current Sensor Exceeded Learning Limit.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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 965

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1EBA Buick Description

The hybrid/EV battery current sensor is mounted inside the hybrid/EV battery pack. The positive high voltage cable that goes to the positive contactor relay passes through the hybrid/EV battery pack current sensor. The hybrid/EV battery pack current sensor detects the amperage that flows in and out of the hybrid/EV batteries. The battery energy control module supplies and monitors a 5 V reference signal to the hybrid/EV battery pack current sensor. The hybrid/EV battery pack current sensor returns a signal between 0 and 5 V to the battery energy control module. The hybrid/EV battery pack current sensor signal is in proportion to the amperage going in and out of the hybrid/EV battery pack. A signal voltage of the hybrid/EV battery pack current sensor greater than 2.5 V indicates that the hybrid/EV battery is being charged and a signal voltage less than 2.5 V indicates discharging. The hybrid/EV battery pack current sensor has 2 measurement ranges in order to maintain accuracy. The ranges are low resolution and high resolution. The measurement ranges of the hybrid/EV battery pack current sensor have some overlap with each other. The high resolution measures from -23 to +23 A. The low resolution measures from -470 to +280 A.

OBDII Code P1EBA Buick - Hybrid/EV Battery Low Resolution Current Sensor Exceeded Learning Limit - AutoCodes.com — P1EBA Buick Code - Hybrid/EV Battery Low Resolution Current Sensor Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P1EBA Buick?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC P1EBA 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 P1EBA 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 P1EBA Buick Code

1. What are common symptoms of OBDII code P1EBA in a Buick hybrid/EV?

The common symptoms of code P1EBA include reduced hybrid/EV performance, potential drivability issues, and a warning light on the dashboard.

2. What could cause the OBDII code P1EBA in a Buick hybrid/EV?

The code P1EBA typically indicates that the Hybrid/EV battery low-resolution current sensor has exceeded its learning limit. This can be caused by sensor malfunctions, wiring issues, or problems with the battery management system.

3. How can I diagnose the cause of OBDII code P1EBA in my Buick hybrid/EV?

To diagnose the issue, you may need to perform a thorough inspection of the current sensor, check the wiring for any damage or loose connections, and use a diagnostic scan tool to gather data from the battery management system.

4. Can I drive my Buick with the OBDII code P1EBA present?

It is not recommended to drive your Buick with the code P1EBA active, as it can lead to further damage to the hybrid/EV system. It's best to have the issue diagnosed and repaired as soon as possible.

5. What are some possible repair options for OBDII code P1EBA in a Buick hybrid/EV?

Repair options may include replacing the current sensor, repairing any damaged wiring, resetting the learned values in the battery management system, or updating the system software to address the issue.

6. Is it safe to reset the OBDII code P1EBA in my Buick hybrid/EV without fixing the underlying issue?

Resetting the code without addressing the underlying problem may temporarily turn off the warning light, but the issue will likely resurface. It is crucial to diagnose and repair the root cause of the code to prevent further complications.

7. Can a DIY enthusiast fix OBDII code P1EBA in a Buick hybrid/EV?

While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing code P1EBA may require specialized tools and knowledge of hybrid/EV systems. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code P1EBA in a Buick hybrid/EV?

The cost of repairing code P1EBA can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It's advisable to obtain quotes from different repair shops to compare prices.

9. What are the long-term implications of ignoring OBDII code P1EBA in my Buick hybrid/EV?

Ignoring code P1EBA can lead to further deterioration of the hybrid/EV system, potentially causing more expensive repairs in the future and compromising the vehicle's overall performance and efficiency.

10. Can regular maintenance help prevent OBDII code P1EBA in a Buick hybrid/EV?

Regular maintenance, including scheduled check-ups and inspections of the hybrid/EV system, can help detect potential issues early on and prevent codes like P1EBA from occurring. Following the manufacturer's maintenance recommendations is key to keeping the system in optimal condition.