AutoCodes – Buick – P1A85 Buick

P1A85 Buick Code - Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage

Quick Answer

The Starter/Generator Control Module (SGCM) electronics are immersed in an internal fluid to distribute the heat of the electronics evenly through the SGCM, this electronics internal fluid is not the coolant that is circulated through the SGCM cooling system. 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: P1A85 Buick indicates Starter/Generator Control Module Coolant Level Sensor 4 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 926

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1A85 Buick Description

OBDII Code P1A85 Buick - Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage - AutoCodes.com — P1A85 Buick Code - Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1A85 Buick?

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 P1A85 Buick?

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 does this mean?

Code Tech Notes

If the vehicle is on an extreme angle this code may set.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1A85 Buick 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 P1A85 Buick code?

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Need Help with the Code?

Get the P1A85 Buick 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 P1A85 Buick Code

1. What are common symptoms of OBDII code P1A85 in a Buick related to the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage?

- Common symptoms include the check engine light illuminating, reduced engine power, and potential issues with starting the vehicle.

2. What are possible causes of OBDII code P1A85 indicating Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage in a Buick?

- Possible causes may include a malfunctioning coolant level sensor, wiring issues, low coolant levels, or a faulty Starter/Generator Control Module.

3. How can I diagnose OBDII code P1A85 in my Buick related to the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage?

- Diagnosis typically involves using an OBDII scanner to read the code, checking coolant levels, inspecting the sensor and wiring for damage, and testing the Starter/Generator Control Module.

4. Can low coolant levels trigger OBDII code P1A85 in a Buick due to the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage?

- Yes, low coolant levels can cause the sensor to detect low voltage, triggering the P1A85 code. It is important to maintain proper coolant levels in the vehicle.

5. What are some repair tips for addressing OBDII code P1A85 related to the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage in a Buick?

- Repair tips may include checking and topping up coolant levels, inspecting and replacing the coolant level sensor if needed, and ensuring all wiring connections are secure.

6. Is it safe to continue driving my Buick with OBDII code P1A85 indicating Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage?

- It is not recommended to continue driving with this code present, as it can lead to potential engine issues. It is best to address the problem promptly.

7. Can a DIY enthusiast fix OBDII code P1A85 related to the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage in a Buick?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address this code by following repair guides and using the necessary diagnostic equipment.

8. How much does it typically cost to repair OBDII code P1A85 associated with the Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage in a Buick?

- The cost of repair can vary based on the exact cause of the issue, but it may involve expenses for parts like the sensor or Starter/Generator Control Module, as well as labor charges if professional assistance is needed.