AutoCodes – Chevrolet – P0AE4 Chevrolet

P0AE4 Chevrolet Code - Hybrid/EV Battery Precharge Transistor Control Circuit

Quick Answer

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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: P0AE4 Chevrolet indicates Hybrid/EV Battery Precharge Transistor Control Circuit.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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 1,203

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 Apr 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0AE4 Chevrolet Description

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. The high voltage contactors and transistors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the hybrid/EV battery assembly. The 5 high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor, charge negative high voltage contactor and multi-function high voltage contactor. The 2 transistors consist of the precharge transistor and heater transistor. The contactors and transistors close and open in a specific sequence controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies voltage to the control circuit for the high voltage contactors/transistors. Ground is provided through the case ground.

OBDII Code P0AE4 Chevrolet - Hybrid/EV Battery Precharge Transistor Control Circuit - AutoCodes.com — P0AE4 Chevrolet Code - Hybrid/EV Battery Precharge Transistor Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0AE4 Chevrolet?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC P0AE4 Chevrolet?

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 P0AE4 Chevrolet 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 P0AE4 Chevrolet Code

1. What are the common symptoms of OBDII code P0AE4 in a Chevrolet hybrid/EV vehicle?

- Common symptoms include loss of power, reduced fuel efficiency, illuminated check engine light, and the vehicle might go into a reduced power mode.

2. What can cause the OBDII code P0AE4 related to the Hybrid/EV Battery Precharge Transistor Control Circuit?

- The code can be triggered by issues with the precharge transistor control circuit itself, wiring problems, or issues with the hybrid/EV battery system.

3. How serious is the OBDII code P0AE4 in a Chevrolet hybrid/EV vehicle?

- This code should be addressed promptly as it can affect the performance and efficiency of the hybrid/EV system. Continuing to drive with this code present can potentially lead to further damage.

4. Can I still drive my Chevrolet hybrid/EV vehicle with the P0AE4 code present?

- It is not recommended to drive the vehicle with the P0AE4 code present, as it can lead to decreased performance and potential long-term damage to the hybrid/EV system.

5. How can I diagnose and repair the OBDII code P0AE4 in my Chevrolet hybrid/EV vehicle?

- Proper diagnosis requires specialized tools and expertise. It is recommended to take your vehicle to a qualified technician or dealership familiar with hybrid/EV systems for diagnosis and repair.

6. Is it safe to reset the OBDII code P0AE4 in my Chevrolet hybrid/EV vehicle using a diagnostic tool?

- While clearing the code may temporarily turn off the check engine light, it is important to address the underlying issue causing the code to prevent further damage to the hybrid/EV system.

7. Are there any DIY repair tips for resolving the OBDII code P0AE4 in a Chevrolet hybrid/EV vehicle?

- Due to the complexity of hybrid/EV systems, DIY repairs for this code are not recommended. It is best to seek professional assistance to accurately diagnose and repair the issue.

8. How much does it typically cost to repair the OBDII code P0AE4 in a Chevrolet hybrid/EV vehicle?

- The cost of repair can vary based on the underlying cause of the code and the extent of the repairs needed. It is best to get a diagnostic assessment from a qualified technician for an accurate cost estimate.

9. Can the OBDII code P0AE4 be a recurring issue in Chevrolet hybrid/EV vehicles?

- If the underlying cause of the code is not properly diagnosed and repaired, it can potentially recur. Regular maintenance and timely repairs can help prevent the code from reoccurring.

10. Will driving a Chevrolet hybrid/EV vehicle with the OBDII code P0AE4 damage other components of the vehicle?

- Continuing to drive with the P0AE4 code present can potentially lead to damage to other components of the hybrid/EV system. It is best to address the issue promptly to prevent further damage.