AutoCodes – GMC – P1AE4 GMC

P1AE4 GMC 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 GMC 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 858

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 GMC 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 GMC - Battery Energy Control Module High Voltage System Interlock Circuit High Voltage - AutoCodes.com — P1AE4 GMC 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 GMC?

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 GMC?

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 GMC 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 GMC Code

1. What are common symptoms of OBDII code P1AE4 in a GMC vehicle?

- Common symptoms include a check engine light, reduced power mode, difficulty starting the vehicle, and poor overall performance.

2. What does the OBDII code P1AE4 GMC indicate?

- The code P1AE4 indicates a problem with the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage in a GMC vehicle.

3. What are possible causes of the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue?

- Potential causes include a faulty battery energy control module, damaged wiring or connectors, software glitches, or a malfunctioning high voltage system component.

4. How can I diagnose the OBDII code P1AE4 in my GMC vehicle?

- Diagnosing this code typically requires a comprehensive scan tool to read the specific details of the high voltage system interlock circuit issue, along with conducting a visual inspection of related components.

5. Can I continue driving my GMC vehicle with the P1AE4 code present?

- It is not recommended to drive the vehicle with the code P1AE4 present, as it can lead to further damage to the high voltage system and potentially compromise the safety of the vehicle.

6. How can I repair the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue in my GMC vehicle?

- Repairing this issue usually involves replacing the faulty battery energy control module, repairing any damaged wiring or connectors, updating software if necessary, and ensuring proper functioning of all high voltage system components.

7. Is it possible to reset the OBDII code P1AE4 without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause of the problem to prevent further issues with the high voltage system in your GMC vehicle.

8. Are there any safety precautions to take when dealing with the high voltage system in a GMC vehicle?

- When working on the high voltage system, always follow manufacturer safety guidelines, wear appropriate personal protective equipment, and consider seeking professional assistance if you are not experienced with high voltage systems.

9. How long does it typically take to repair the Battery Energy Control Module High Voltage System Interlock Circuit High Voltage issue?

- The repair time can vary depending on the exact cause of the problem and the availability of parts. It is advisable to consult with a qualified mechanic for a more accurate estimate.

10. Can a DIY enthusiast with some automotive experience fix the P1AE4 code issue in a GMC vehicle?

- While some experienced DIY enthusiasts may be able to diagnose and repair simple electrical issues, dealing with the high voltage system in a GMC vehicle can be complex and dangerous. It is recommended to seek professional help for this type of repair.