AutoCodes – Cadillac – P1AE4 Cadillac

P1AE4 Cadillac 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 Cadillac 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 803

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

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include the Check Engine light coming on, reduced electric vehicle range, and potential issues with starting the vehicle.

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

- Potential causes may include a malfunctioning Battery Energy Control Module, damaged interlock circuit wiring, or issues with the high voltage system components.

3. How can I diagnose OBDII code P1AE4 in my Cadillac?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the high voltage system components, checking the interlock circuit wiring, and testing the Battery Energy Control Module.

4. Is it safe to continue driving my Cadillac with OBDII code P1AE4 present?

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

5. Can I repair OBDII code P1AE4 in my Cadillac myself?

- While some DIY enthusiasts may attempt to diagnose and repair this code, it is highly recommended to seek professional assistance due to the complexity and safety concerns associated with high voltage systems.

6. How much does it typically cost to repair OBDII code P1AE4 in a Cadillac?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve replacing the Battery Energy Control Module, repairing wiring, or addressing other high voltage system components. Costs can range from a few hundred to over a thousand dollars.

7. Are there any preventive maintenance tips to help avoid OBDII code P1AE4 in a Cadillac?

- Regularly inspecting the high voltage system components, ensuring proper maintenance of the Battery Energy Control Module, and addressing any electrical issues promptly can help prevent this code from appearing.

8. Can a faulty battery be a potential cause of OBDII code P1AE4 in a Cadillac?

- Yes, a faulty or deteriorating high voltage battery can contribute to triggering this code, as it may affect the overall performance and function of the Battery Energy Control Module.

9. Will clearing the OBDII code P1AE4 in a Cadillac reset the high voltage system?

- Clearing the code may reset the Check Engine light, but it will not address the underlying issue causing the code. It is important to diagnose and repair the root cause of the problem to ensure the high voltage system functions properly.

10. How long does it take to repair OBDII code P1AE4 in a Cadillac?

- The repair time can vary depending on the specific issue and the availability of parts. Some repairs may be completed within a few hours, while more complex issues could take a day or longer to address properly.