AutoCodes – Chevrolet – P0AE2 Chevrolet

P0AE2 Chevrolet Code - Hybrid/EV Battery Precharge Transistor Circuit Stuck On

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: P0AE2 Chevrolet indicates Hybrid/EV Battery Precharge Transistor Circuit Stuck On.
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 1,353

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 P0AE2 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 P0AE2 Chevrolet - Hybrid/EV Battery Precharge Transistor Circuit Stuck On - AutoCodes.com — P0AE2 Chevrolet Code - Hybrid/EV Battery Precharge Transistor Circuit Stuck On

What does this mean?

What are the Possible Causes of the DTC P0AE2 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 P0AE2 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 P0AE2 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 P0AE2 Chevrolet Code

1. What are the common symptoms of OBDII code P0AE2 in a Chevrolet hybrid/EV vehicle?

- Common symptoms include the check engine light illuminating, reduced hybrid/EV performance, and potential difficulty starting the vehicle.

2. What does the OBDII code P0AE2 for Hybrid/EV Battery Precharge Transistor Circuit Stuck On indicate?

- This code indicates a malfunction in the precharge transistor circuit, which is responsible for preparing the high-voltage battery for operation.

3. What are the possible causes of OBDII code P0AE2 in a Chevrolet hybrid/EV vehicle?

- Possible causes include a faulty precharge transistor, wiring issues, a malfunctioning battery management system, or software glitches.

4. How can I diagnose the OBDII code P0AE2 in my Chevrolet hybrid/EV vehicle?

- Diagnosing this code typically involves using a scan tool to retrieve the specific fault codes, inspecting the precharge transistor and related components, and checking for any visible wiring damage.

5. Can I continue driving my Chevrolet hybrid/EV vehicle with the P0AE2 fault code?

- It is not recommended to continue driving the vehicle with this fault code, as it can lead to further damage to the high-voltage system and potentially unsafe driving conditions.

6. How can I repair OBDII code P0AE2 in my Chevrolet hybrid/EV vehicle?

- Repairing this code may involve replacing the faulty precharge transistor, repairing any damaged wiring, resetting the battery management system, or updating the vehicle's software.

7. Is it possible to clear the OBDII code P0AE2 in a Chevrolet hybrid/EV vehicle without fixing the underlying issue?

- Clearing the code without addressing the root cause is not recommended, as the issue may persist and lead to more serious problems down the line.

8. How much does it typically cost to repair OBDII code P0AE2 in a Chevrolet hybrid/EV vehicle?

- Repair costs can vary depending on the specific issue, but expect to pay anywhere from a few hundred to a thousand dollars for parts and labor.

9. Can a DIY enthusiast fix the OBDII code P0AE2 in a Chevrolet hybrid/EV vehicle?

- While some basic troubleshooting and repairs may be possible for experienced DIYers, diagnosing and repairing high-voltage systems like this code should be left to professionals due to safety concerns.

10. How can I prevent OBDII code P0AE2 from occurring in my Chevrolet hybrid/EV vehicle?

- Regular maintenance, including checking the high-voltage system, ensuring all connections are secure, and addressing any warning lights promptly, can help prevent this code from occurring.