AutoCodes – Chevrolet – P1AA0 Chevrolet

P1AA0 Chevrolet Code - Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage

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: P1AA0 Chevrolet indicates Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,076

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1AA0 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 P1AA0 Chevrolet - Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage - AutoCodes.com — P1AA0 Chevrolet Code - Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1AA0 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 P1AA0 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 P1AA0 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 P1AA0 Chevrolet code?

Need more information on how to fix the P1AA0 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1AA0 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 P1AA0 Chevrolet Code

1. What are the common symptoms of OBDII code P1AA0 in a Chevrolet related to the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- Common symptoms may include the illumination of the check engine light, reduced vehicle performance, and potential issues with the hybrid system.

2. What are the possible causes of OBDII code P1AA0 in a Chevrolet indicating a low voltage in the Starter/Generator Inverter Phase V Temperature Sensor Circuit?

- Causes can include a faulty temperature sensor, damaged wiring in the circuit, a malfunctioning inverter, or issues with the hybrid system's components.

3. How can I diagnose the OBDII code P1AA0 in a Chevrolet related to the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- Diagnosis typically involves using a scan tool to retrieve the trouble code, inspecting the temperature sensor and its wiring, testing the inverter and related components, and checking for any loose connections.

4. Is it safe to continue driving my Chevrolet with OBDII code P1AA0 indicating low voltage in the Starter/Generator Inverter Phase V Temperature Sensor Circuit?

- It is not recommended to drive the vehicle with this code present, as it can potentially lead to further damage to the hybrid system components. It's best to address the issue promptly.

5. Can I repair OBDII code P1AA0 related to the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage on my own?

- While some DIY enthusiasts may attempt to address the issue, due to the complexity of the hybrid system and the specialized components involved, it is recommended to seek professional help for an accurate diagnosis and repair.

6. Are there any specific repair tips for resolving OBDII code P1AA0 in a Chevrolet linked to the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- Repair tips may include checking for corrosion in electrical connections, ensuring proper insulation of wiring, and following manufacturer guidelines for testing and replacing components.

7. How much does it typically cost to repair OBDII code P1AA0 in a Chevrolet associated with the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- Repair costs can vary depending on the exact cause of the issue and the extent of the repairs needed. It is advisable to obtain quotes from reputable mechanics or dealerships.

8. Can a faulty Starter/Generator Inverter Phase V Temperature Sensor cause OBDII code P1AA0 in a Chevrolet to trigger low voltage in the circuit?

- Yes, a malfunctioning temperature sensor can indeed lead to the low voltage condition in the Starter/Generator Inverter Phase V Temperature Sensor Circuit, triggering the OBDII code P1AA0.

9. Will resetting the OBDII code P1AA0 in a Chevrolet resolve the issue related to the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- Resetting the code may temporarily clear the check engine light, but if the underlying problem causing the low voltage in the circuit persists, the code is likely to reappear. It's essential to diagnose and address the root cause.

10. How long does it typically take to repair OBDII code P1AA0 in a Chevrolet associated with the Starter/Generator Inverter Phase V Temperature Sensor Circuit Low Voltage?

- The repair time can vary depending on the exact cause of the issue, the availability of parts, and the mechanic's expertise. It's advisable to consult with a professional to get an accurate estimate of the repair duration.