AutoCodes – Saturn – P0A02 Saturn

P0A02 Saturn Code - Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage

Quick Answer

The Starter/Generator Control Module (SGCM) monitors its internal fluid temperature sensors to control the SGCM coolant pump and SGCM cooling fan. 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: P0A02 Saturn indicates Starter/Generator Control Module Coolant Temperature Sensor 1 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.

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Code Popularity 1,098

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0A02 Saturn Description

The Starter/Generator Control Module (SGCM) monitors its internal fluid temperature sensors to control the SGCM coolant pump and SGCM cooling fan. The internal fluid temperature sensors of the SGCM are thermistors and are not serviceable. When the internal fluid temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the internal fluid temperatures are hot, the resistances of the sensors are low and the voltage signals are low. The input parameters are not displayed on the scan tool.

OBDII Code P0A02 Saturn - Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage - AutoCodes.com — P0A02 Saturn Code - Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0A02 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 P0A02 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 P0A02 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 P0A02 Saturn code?

Need more information on how to fix the P0A02 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 P0A02 Saturn Code

1. What are common symptoms of OBDII code P0A02 in a Saturn related to the Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage?

The common symptoms include poor engine performance, reduced fuel efficiency, and potential stalling of the vehicle.

2. What are the possible causes of OBDII code P0A02 in a Saturn?

The code P0A02 can be triggered by issues such as a faulty coolant temperature sensor, wiring problems, or a malfunctioning starter/generator control module.

3. How can I diagnose the cause of OBDII code P0A02 in my Saturn?

Diagnosing the issue may involve checking the coolant temperature sensor, inspecting the wiring for any damage, and testing the starter/generator control module for proper function.

4. Can I still drive my Saturn with OBDII code P0A02 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code P0A02 in my Saturn?

Repairing the code may involve replacing the faulty coolant temperature sensor, repairing any damaged wiring, or replacing the starter/generator control module if necessary.

6. Are there any DIY tips for fixing OBDII code P0A02 in a Saturn?

While some basic troubleshooting like checking and cleaning connections can be done DIY, it is advisable to seek professional help for accurate diagnosis and repair of this code.

7. Can a low coolant level cause OBDII code P0A02 in a Saturn?

A low coolant level may not directly cause this specific code, but it can lead to overheating issues that may indirectly affect the coolant temperature sensor readings.

8. How long does it typically take to repair OBDII code P0A02 in a Saturn?

The repair time can vary depending on the exact cause of the code and the extent of the issue. It is recommended to consult a mechanic for a more accurate estimate.

9. Is it safe to reset the OBDII code P0A02 in my Saturn using a diagnostic tool?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It's important to fix the root cause of the problem.

10. What is the importance of addressing OBDII code P0A02 in a timely manner?

Addressing the code promptly helps prevent further damage to the vehicle and ensures optimal performance and fuel efficiency. Delaying repairs can lead to more costly issues down the line.