AutoCodes – Generic – P1AE2

P1AE2 Code - Battery Energy Control Module High Voltage System Interlock Circuit

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: P1AE2 indicates Battery Energy Control Module High Voltage System Interlock Circuit.
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 9,058

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 P1AE2 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 P1AE2 - Battery Energy Control Module High Voltage System Interlock Circuit - AutoCodes.com — P1AE2 Code - Battery Energy Control Module High Voltage System Interlock Circuit

What does this mean?

What are the Possible Causes of the DTC P1AE2?

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 P1AE2?

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 P1AE2 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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Information for Specific Makes

P1AE2 Buick — Battery Energy Control Module High Voltage System Interlock Circuit
P1AE2 Cadillac — Battery Energy Control Module High Voltage System Interlock Circuit
P1AE2 Chevrolet — Battery Energy Control Module High Voltage System Interlock Circuit
P1AE2 GMC — Battery Energy Control Module High Voltage System Interlock Circuit
P1AE2 Saturn — Battery Energy Control Module High Voltage System Interlock Circuit

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 P1AE2 Code

1. What are common symptoms of OBDII code P1AE2 - Battery Energy Control Module High Voltage System Interlock Circuit?

- Common symptoms include the illumination of the check engine light, reduced fuel efficiency, and potential issues with the hybrid battery system.

2. What can cause OBDII code P1AE2 to trigger?

- This code can be triggered by a faulty Battery Energy Control Module, issues with the high voltage system interlock circuit, or wiring problems.

3. How serious is OBDII code P1AE2 - Battery Energy Control Module High Voltage System Interlock Circuit?

- This code indicates a potential issue with the high voltage system in hybrid vehicles, and it is recommended to address it promptly to prevent further damage.

4. Can I continue driving with OBDII code P1AE2 present?

- It is not recommended to continue driving with this code active, as it may lead to further complications with the hybrid battery system and other components.

5. How can I diagnose and repair OBDII code P1AE2?

- Diagnosis typically involves using a scan tool to retrieve the specific details of the code, followed by inspecting the Battery Energy Control Module, interlock circuit, and related wiring for any faults.

6. Are there any DIY repair tips for OBDII code P1AE2?

- DIY repair may involve checking and securing the connections in the high voltage system, but it is recommended to seek professional assistance due to the complexity and safety concerns with hybrid systems.

7. Will resetting the check engine light resolve OBDII code P1AE2?

- Simply resetting the check engine light will not address the underlying issue causing the code. Proper diagnosis and repair are necessary to prevent the code from reoccurring.

8. Can extreme weather conditions cause OBDII code P1AE2 to appear?

- Extreme temperatures or weather conditions can potentially affect the performance of the high voltage system, leading to the triggering of this code.

9. Is OBDII code P1AE2 specific to certain vehicle makes and models?

- This code is typically found in hybrid vehicles equipped with a Battery Energy Control Module and high voltage system interlock circuit, regardless of the make and model.

10. What is the average cost to repair OBDII code P1AE2?

- The repair cost for this code can vary depending on the extent of the issue and the specific components that need to be repaired or replaced. It is advisable to consult a professional for an accurate estimate.