AutoCodes – Buick – P1AE4 Buick

P1AE4 Buick Code - Battery Energy Control Module High Voltage System Interlock Circuit High Voltage

Quick Answer

The high voltage interlock circuit is utilized to verify high voltage component integrity. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter 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: P1AE4 Buick indicates Battery Energy Control Module High Voltage System Interlock Circuit High Voltage.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter 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 889

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 Mar 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1AE4 Buick Description

The high voltage interlock circuit is utilized to verify high voltage component integrity. High voltage interlock circuit is a circuit loop that passes through certain high voltage components. High voltage interlock circuit is used to determine if access to high voltage components is being attempted. The opening of these high voltage components causes the high voltage interlock circuit to open. The battery energy control module sources about 12 mA of current on the 5V high voltage interlock circuit loop. The battery energy control module monitors both the high voltage interlock source current circuit and the high voltage interlock return current circuit in order to detect circuit faults. Both motor control modules monitor the circuit for current in order to detect an open condition. When the battery energy control module and/or the motor control modules sense conditions such as a loss of high voltage interlock circuit current, the high voltage contactor relays are commanded open by the hybrid powertrain control module.

OBDII Code P1AE4 Buick - Battery Energy Control Module High Voltage System Interlock Circuit High Voltage - AutoCodes.com — P1AE4 Buick Code - Battery Energy Control Module High Voltage System Interlock Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1AE4 Buick?

Faulty Drive Motor Generator Power Inverter Module
Drive Motor Generator Power Inverter Module harness is open or shorted
Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1AE4 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 P1AE4 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 P1AE4 Buick Code

1. What are the common symptoms of OBDII code P1AE4 in a Buick related to the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue?

- Common symptoms may include the vehicle going into a reduced power mode, difficulty starting, or a visible warning light on the dashboard.

2. What are some possible causes of the OBDII code P1AE4 in a Buick?

- Causes can include a faulty Battery Energy Control Module, issues with the high voltage interlock circuit, or problems with the high voltage system components.

3. How serious is the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue indicated by the OBDII code P1AE4 in a Buick?

- This issue should be addressed promptly as it can affect the overall performance and safety of the vehicle, especially in hybrid or electric models.

4. Can I continue driving my Buick with the OBDII code P1AE4 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

5. How can I diagnose and repair the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue in my Buick?

- Diagnosis should be done using a professional OBDII scanner to pinpoint the exact cause. Repair may involve replacing the faulty components, checking wiring connections, or recalibrating the system.

6. Is it possible to reset the OBDII code P1AE4 in a Buick without addressing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause of the problem to prevent it from reoccurring and potentially causing more severe issues.

7. Are there any DIY tips for troubleshooting the OBDII code P1AE4 in a Buick before seeking professional help?

- You can check for loose connections, inspect the high voltage system components for visible damage, and ensure the Battery Energy Control Module is functioning correctly.

8. How much can I expect to pay for repairing the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue in a Buick?

- Repair costs can vary depending on the exact cause of the problem, but it's recommended to consult with a qualified mechanic for an accurate estimate.

9. Can extreme weather conditions impact the occurrence of the OBDII code P1AE4 in a Buick?

- Yes, extreme temperatures can sometimes affect the performance of high voltage systems in vehicles, potentially triggering this code.

10. How can regular maintenance help prevent the OBDII code P1AE4 related to the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue in my Buick?

- Regular maintenance, including checking the high voltage system components and ensuring proper connections, can help prevent issues that may lead to this OBDII code.