AutoCodes – Saturn – P0AE2 Saturn

P0AE2 Saturn 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 Saturn 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 929

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

What does this mean?

What are the Possible Causes of the DTC P0AE2 Saturn?

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 Saturn?

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 Saturn 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 Saturn Code

1. What are common symptoms of OBDII code P0AE2 in a Saturn Hybrid/EV?

- Common symptoms include a warning light on the dashboard, reduced fuel efficiency, and potential issues with starting or driving the vehicle.

2. What does the OBDII code P0AE2 in a Saturn Hybrid/EV indicate?

- This code indicates a problem with the Hybrid/EV battery precharge transistor circuit being stuck on.

3. What are possible causes of the Hybrid/EV battery precharge transistor circuit being stuck on?

- Possible causes include a faulty precharge transistor, wiring issues, or problems with the hybrid battery control module.

4. How can I diagnose the cause of OBDII code P0AE2 in my Saturn Hybrid/EV?

- Diagnosing this code typically involves using a scan tool to check for specific fault codes, testing the precharge transistor, and inspecting the wiring for any damage.

5. Can I continue driving my Saturn Hybrid/EV with OBDII code P0AE2?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/EV system.

6. How can I repair OBDII code P0AE2 in my Saturn Hybrid/EV?

- Repair options may include replacing the faulty precharge transistor, repairing any damaged wiring, or addressing issues with the hybrid battery control module.

7. Is it safe to repair OBDII code P0AE2 in a Saturn Hybrid/EV myself?

- Repairing this code may require specialized knowledge and tools, so it is recommended to have a qualified mechanic or technician diagnose and repair the issue.

8. How much does it typically cost to fix OBDII code P0AE2 in a Saturn Hybrid/EV?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can OBDII code P0AE2 be a recurring issue in a Saturn Hybrid/EV?

- If the underlying cause of the code is not properly addressed, it can potentially recur, so it is important to ensure a thorough diagnosis and repair.

10. How can I prevent OBDII code P0AE2 from occurring in my Saturn Hybrid/EV in the future?

- Regular maintenance, such as checking the hybrid battery system and addressing any warning lights promptly, can help prevent issues that may lead to this code.