AutoCodes – Cadillac – P1AE2 Cadillac

P1AE2 Cadillac 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 Cadillac 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,473

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P1AE2 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 P1AE2 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 P1AE2 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.

Need more information about the P1AE2 Cadillac code?

Need more information on how to fix the P1AE2 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1AE2 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 Cadillac Code

What does the OBDII code P1AE2 mean for my Cadillac?

P1AE2 indicates a problem with the Battery Energy Control Module (BECM) regarding the high voltage system interlock circuit, suggesting a fault in the safety mechanisms that prevent high voltage components from being activated when they shouldn't be.

What symptoms might I experience if my Cadillac has the P1AE2 code?

Common symptoms include warning lights on the dashboard, reduced power or performance, and potential issues with starting the vehicle. You may also notice that the hybrid or electric system is not functioning properly.

What could cause the P1AE2 code to trigger in my Cadillac?

Possible causes include a faulty Battery Energy Control Module, damaged wiring or connectors in the high voltage interlock circuit, or issues with other components of the hybrid or electric powertrain system.

Can I drive my Cadillac if the P1AE2 code is present?

While it may be possible to drive the vehicle, it is not recommended as it could lead to further damage or safety risks. It's best to address the issue as soon as possible.

How can I diagnose the issue associated with the P1AE2 code?

Start with a full diagnostic scan using an OBDII scanner to confirm the P1AE2 code and check for any related codes. Visually inspect the wiring and connectors in the high voltage interlock circuit for damage or corrosion.

What are some common repair tips for fixing the P1AE2 code?

Repairs may involve replacing damaged wiring or connectors, addressing any issues with the Battery Energy Control Module, or resetting the system after performing repairs. Always follow manufacturer guidelines for repairs.

Is it safe to reset the P1AE2 code?

Resetting the code may clear the warning lights temporarily, but if the underlying issue is not addressed, the code is likely to return. It's important to diagnose and fix the root cause first.

How much does it typically cost to repair the P1AE2 code issue?

Repair costs can vary widely based on the specific problem and labor rates, but you might expect to pay anywhere from $100 to $1,500 depending on whether it involves simple wiring repairs or a module replacement.

Will I need special tools to fix the P1AE2 code?

Yes, working on the high voltage system in hybrid or electric vehicles often requires specialized tools and safety equipment to handle the risks associated with high voltage components safely.

Can a DIY mechanic fix the P1AE2 code issue?

While some aspects may be manageable for a DIY mechanic, due to the high voltage components involved, it is often recommended to seek professional assistance to ensure safety and proper repairs.