AutoCodes – Chevrolet – P1A75 Chevrolet

P1A75 Chevrolet Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance

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: P1A75 Chevrolet indicates Starter/Generator Control Module Coolant Temperature Sensor 2 Performance.
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 979

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P1A75 Chevrolet 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 P1A75 Chevrolet - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance - AutoCodes.com — P1A75 Chevrolet Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance

What does this mean?

What are the Possible Causes of the DTC P1A75 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 P1A75 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 P1A75 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.

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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 P1A75 Chevrolet Code

What does the OBDII code P1A75 mean on a Chevrolet?

P1A75 indicates an issue with the Starter/Generator Control Module Coolant Temperature Sensor 2, specifically its performance or output being out of range.

What are the common symptoms of a P1A75 code?

Common symptoms include the check engine light turning on, reduced fuel efficiency, possible overheating of the starter/generator system, and limited hybrid system performance (if applicable).

What causes the P1A75 code on a Chevrolet?

The most common causes are a faulty coolant temperature sensor, wiring or connector issues, coolant leaks, or a malfunction in the Starter/Generator Control Module.

Can I drive my Chevrolet with a P1A75 code?

Driving with a P1A75 code is not recommended, as it may result in reduced hybrid performance, overheating, or further damage to the starter/generator system.

How do you diagnose the P1A75 code?

Diagnosis typically involves scanning the vehicle with an OBDII scanner, inspecting the sensor and its wiring for damage, and testing the sensorâ€™s resistance and output.

How do you fix a P1A75 code on a Chevrolet?

Repairs may include replacing the faulty coolant temperature sensor, repairing damaged wiring or connectors, ensuring proper coolant levels, or addressing issues with the Starter/Generator Control Module.

What tools are needed to troubleshoot a P1A75 code?

Youâ€™ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly tools to access and replace the sensor or repair wiring.

Can low coolant levels trigger a P1A75 code?

Yes, low coolant levels can cause improper sensor readings and trigger the P1A75 code, so itâ€™s important to check and maintain proper coolant levels.

How much does it cost to fix a P1A75 code?

Costs vary depending on the issue, but replacing the coolant temperature sensor typically costs $100â€“$300, including parts and labor. Wiring repairs or module replacements may cost more.

Is the P1A75 code specific to hybrid vehicles?

Yes, this code is often associated with hybrid or electric Chevrolet vehicles that use a Starter/Generator Control Module for system cooling and performance management.