AutoCodes – Saturn – P1AEF Saturn

P1AEF Saturn Code - Drive Motor 2 Control Module Hybrid Battery System Voltage High

Quick Answer

The Drive Motor Generator Power Inverter Control Module contains two motor control modules. 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: P1AEF Saturn indicates Drive Motor 2 Control Module Hybrid Battery System Voltage High.
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 756

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 P1AEF Saturn Description

The Drive Motor Generator Power Inverter Control Module contains two motor control modules. Each motor control modules measures hybrid battery high voltage with several internal sensors. The battery energy control module also monitors high voltage with several internal sensors. The battery energy control module high voltage measurement is broadcast over serial data.

OBDII Code P1AEF Saturn - Drive Motor 2 Control Module Hybrid Battery System Voltage High - AutoCodes.com — P1AEF Saturn Code - Drive Motor 2 Control Module Hybrid Battery System Voltage High

What does this mean?

What are the Possible Causes of the DTC P1AEF Saturn?

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 P1AEF 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 P1AEF 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.

Need more information about the P1AEF Saturn code?

Need more information on how to fix the P1AEF Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1AEF Saturn Code

What does the OBDII code P1AEF mean for a Saturn vehicle?

The P1AEF code indicates that the Drive Motor 2 Control Module has detected a high voltage condition in the hybrid battery system.

What are the common symptoms of the P1AEF code?

Symptoms may include the check engine light being illuminated, reduced hybrid system performance, unusual battery charging behavior, or the vehicle entering limp mode.

What causes the P1AEF code to appear?

The code can be triggered by issues such as a malfunctioning hybrid battery, a faulty Drive Motor 2 Control Module, damaged wiring or connectors, or an internal fault in the battery management system.

Can I drive my Saturn with the P1AEF code active?

Driving with the P1AEF code is not recommended, as it could lead to further damage to the hybrid system or cause unsafe driving conditions.

How is the P1AEF code diagnosed?

Technicians diagnose this code by using a scan tool to check for related codes, inspecting the hybrid battery system, testing the Drive Motor 2 Control Module, and examining wiring and connectors for damage.

How do you fix the P1AEF code on a Saturn?

Repairs may involve replacing the hybrid battery, repairing or replacing damaged wiring or connectors, reprogramming or replacing the Drive Motor 2 Control Module, or addressing other system faults.

Is the P1AEF code specific to Saturn vehicles?

While the P1AEF code is not exclusive to Saturn vehicles, its specific meaning and troubleshooting steps may vary depending on the make and model.

What tools are needed to troubleshoot the P1AEF code?

Diagnosing this code typically requires an OBDII scan tool, a multimeter for testing electrical components, and possibly specialized equipment for hybrid battery testing.

How much does it cost to repair the P1AEF code?

Repair costs can vary widely, ranging from $100 to $5,000, depending on whether minor wiring repairs are needed or if the hybrid battery or control module requires replacement.

Can a low hybrid battery charge cause the P1AEF code?

No, this code specifically relates to a high voltage condition, not a low charge. However, improper battery operation or internal faults can still trigger it.