AutoCodes – Chevrolet – P1AA2 Chevrolet

P1AA2 Chevrolet 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 Chevrolet 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,159
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 24, 2020
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Code P1AA2 Chevrolet 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 Chevrolet - Starter/Generator Inverter Phase V Overtemperature - AutoCodes.com
P1AA2 Chevrolet Code - Starter/Generator Inverter Phase V Overtemperature

What are the Possible Causes of the DTC P1AA2 Chevrolet?

  • 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 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 P1AA2 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.

Need more information about the P1AA2 Chevrolet code?

Need more information on how to fix the P1AA2 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1AA2 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 Chevrolet Code

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

The common symptoms of this code may include the illumination of the check engine light, reduced engine power, and potential issues with the vehicle's starting and charging system.

2. What are possible causes of OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

Possible causes of this code may include a malfunctioning starter/generator inverter, overloading of the inverter, high ambient temperatures, or issues with the cooling system.

3. How can I diagnose OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

Diagnosing this code typically involves using a professional OBDII scanner to read the code, checking the inverter for any visible damage or overheating, and inspecting the cooling system components for any issues.

4. What are some repair tips for OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

Repair tips may include ensuring proper cooling system functioning, checking for any loose or damaged connections in the inverter system, and monitoring the inverter's workload to prevent overloading.

5. Can I drive my vehicle with OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the inverter system and potentially affect the vehicle's performance and safety.

6. How serious is OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

This code should be addressed promptly, as continued operation of the vehicle with this issue can lead to overheating of critical components and potential damage to the electrical system.

7. How much does it cost to repair OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

The cost of repairing this code can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to consult a professional mechanic for an accurate estimate.

8. Can OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature) be reset without repairs?

Resetting the code without addressing the underlying issue is not recommended, as the problem may persist and potentially cause more severe damage to the vehicle over time.

9. Are there any recalls related to OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature)?

It is advisable to check with Chevrolet or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this specific OBDII code to see if your vehicle is affected.

10. How can I prevent OBDII code P1AA2 Chevrolet (Starter/Generator Inverter Phase V Overtemperature) from occurring in the future?

To prevent this code from occurring in the future, it is essential to perform regular maintenance on the vehicle, ensure proper cooling system operation, and address any issues promptly to avoid overheating of the inverter system.

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