AutoCodes – Saturn – P1AA2 Saturn

P1AA2 Saturn Code - Starter/Generator Inverter Phase V Overtemperature

Quick Answer

The Power Inverter Module (PIM) temperature 1 and 2 sensors are used for overheat protection. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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: P1AA2 Saturn indicates Starter/Generator Inverter Phase V Overtemperature.
Common causes: Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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 1,016

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 Feb 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1AA2 Saturn Description

The Power Inverter Module (PIM) temperature 1 and 2 sensors are used for overheat protection. The thermistors are located on the control board, near the phase U or V power MOSFET. The Starter/Generator Control Module (SGCM) monitors the inverter temperature sensor for the following:
To detect if the inverter phase U or V temperature sensor is shorted low.
To detect if the inverter phase U or V temperature sensor is shorted high.

OBDII Code P1AA2 Saturn - Starter/Generator Inverter Phase V Overtemperature - AutoCodes.com — P1AA2 Saturn Code - Starter/Generator Inverter Phase V Overtemperature

What does this mean?

What are the Possible Causes of the DTC P1AA2 Saturn?

Faulty Starter/Generator Control Module (SGCM)
Starter/Generator Control Module (SGCM) harness is open or shorted
Starter/Generator Control Module (SGCM) circuit poor electrical connection

How to Fix the DTC P1AA2 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 P1AA2 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 P1AA2 Saturn Code

1. What are the common symptoms of OBDII code P1AA2 Saturn (Starter/Generator Inverter Phase V Overtemperature)?

The common symptoms include the illumination of the Check Engine Light, reduced engine performance, and potential drivability issues.

2. What are the possible causes of OBDII code P1AA2 Saturn?

Possible causes may include a malfunctioning starter/generator inverter, overheating issues in the electrical system, or faulty temperature sensors.

3. How can I diagnose OBDII code P1AA2 Saturn?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the electrical components for signs of damage or overheating, and testing the temperature sensors for accuracy.

4. Can driving with OBDII code P1AA2 Saturn cause further damage to my vehicle?

Continued driving with this code may lead to more severe electrical system issues, reduced fuel efficiency, and potential damage to other components.

5. How can I repair OBDII code P1AA2 Saturn (Starter/Generator Inverter Phase V Overtemperature)?

Repair options may include replacing the faulty starter/generator inverter, addressing any overheating issues, and resetting the fault code with an OBDII scanner after the repair is completed.

6. Are there any preventive maintenance tips to avoid OBDII code P1AA2 Saturn?

Regularly inspecting the electrical system, ensuring proper cooling system function, and addressing any unusual electrical symptoms promptly can help prevent this code from occurring.

7. Can I reset OBDII code P1AA2 Saturn without fixing the underlying issue?

While you can clear the code temporarily, it is recommended to address the root cause of the problem to prevent further issues and ensure proper vehicle operation.

8. Is it safe to drive my vehicle with OBDII code P1AA2 Saturn?

It is not recommended to drive the vehicle with this code present, as it may lead to unpredictable engine behavior and potential safety hazards.

9. How much does it typically cost to repair OBDII code P1AA2 Saturn?

The cost of repair can vary depending on the extent of the issue, the parts needed, and labor costs. It is advisable to consult a mechanic for an accurate estimate.

10. Can a DIY enthusiast fix OBDII code P1AA2 Saturn at home?

While some simple repairs may be possible for experienced DIY enthusiasts, diagnosing and repairing complex electrical issues like this code may require specialized tools and expertise, so professional assistance is often recommended.