AutoCodes – Chevrolet – P1A9E Chevrolet

P1A9E Chevrolet Code - Starter/Generator Inverter Phase U 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
P1A9E Chevrolet indicates Starter/Generator Inverter Phase U 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 892
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 24, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P1A9E 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 P1A9E Chevrolet - Starter/Generator Inverter Phase U Overtemperature - AutoCodes.com
P1A9E Chevrolet Code - Starter/Generator Inverter Phase U Overtemperature

What are the Possible Causes of the DTC P1A9E 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 P1A9E 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 P1A9E 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 P1A9E Chevrolet code?

Need more information on how to fix the P1A9E Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A9E 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 P1A9E Chevrolet Code

1. What are the common symptoms of OBDII code P1A9E in a Chevrolet related to Starter/Generator Inverter Phase U Overtemperature?

- Common symptoms include the illumination of the Check Engine Light, reduced hybrid system performance, and potential stalling or loss of power.

2. What are the possible causes of OBDII code P1A9E in a Chevrolet indicating Starter/Generator Inverter Phase U Overtemperature?

- Causes can include issues with the starter/generator inverter, overheating of the phase U component, electrical faults, or a malfunctioning temperature sensor.

3. How can I diagnose OBDII code P1A9E related to Starter/Generator Inverter Phase U Overtemperature in my Chevrolet?

- Diagnosis typically involves using a professional OBDII scanner to read the code and then conducting further testing on the starter/generator inverter components and related systems.

4. Are there any DIY repair tips for addressing OBDII code P1A9E in a Chevrolet due to Starter/Generator Inverter Phase U Overtemperature?

- DIY repair may be challenging for this code and often requires specialized tools and knowledge. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.

5. Can driving with OBDII code P1A9E related to Starter/Generator Inverter Phase U Overtemperature in a Chevrolet cause further damage?

- Continuing to drive with this code present can potentially lead to more severe issues with the hybrid system, affecting overall vehicle performance and reliability.

6. How much does it typically cost to repair OBDII code P1A9E in a Chevrolet caused by Starter/Generator Inverter Phase U Overtemperature?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to budget for potential replacement of starter/generator inverter components or related systems.

7. Is it safe to reset the OBDII code P1A9E related to Starter/Generator Inverter Phase U Overtemperature in a Chevrolet using a diagnostic tool?

- While resetting the code may temporarily turn off the Check Engine Light, it is crucial to address the root cause of the issue to prevent further problems with the hybrid system.

8. How can I prevent OBDII code P1A9E in a Chevrolet due to Starter/Generator Inverter Phase U Overtemperature from recurring?

- Regular maintenance and inspection of the hybrid system components, as well as addressing any issues promptly, can help prevent the code from reoccurring in the future.

9. Are there any recalls or technical service bulletins related to OBDII code P1A9E in Chevrolet vehicles concerning Starter/Generator Inverter Phase U Overtemperature?

- It is recommended to check with a Chevrolet dealership or the manufacturer's website for any recalls or technical service bulletins specific to this OBDII code and related issues.

10. Can a faulty temperature sensor be the sole reason for triggering OBDII code P1A9E linked to Starter/Generator Inverter Phase U Overtemperature in a Chevrolet?

- While a faulty temperature sensor can contribute to triggering the code, it is essential to conduct thorough diagnostics to identify any underlying issues with the starter/generator inverter or other components.

Discuss the causes and fixes for P1A9E Chevrolet OBDII Code

Code P1A9E Chevrolet comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play