AutoCodes – GMC – C0805 2017 GMC Sierra

C0805 2017 GMC Sierra Code - Control Module Power 2 Circuit

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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: C0805 2017 GMC Sierra indicates Control Module Power 2 Circuit.
Common causes: Common causes include Battery voltage, Faulty Control Module, Control Module harness is open or shorted.
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 159

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 Jul 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0805 2017 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).

OBDII Code C0805 2017 GMC Sierra - Control Module Power 2 Circuit - AutoCodes.com — C0805 2017 GMC Sierra Code - Control Module Power 2 Circuit

What does this mean?

What are the Possible Causes of the DTC C0805 2017 GMC Sierra?

Battery voltage
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC C0805 2017 GMC Sierra?

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 C0805 2017 GMC Sierra 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 C0805 2017 GMC Sierra code?

Need more information on how to fix the C0805 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0805 2017 GMC Sierra 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 C0805 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code C0805 in a 2017 GMC Sierra related to the Control Module Power 2 Circuit?

- Common symptoms include the illumination of the check engine light, loss of power steering assist, and potential issues with the vehicle's electronic systems.

2. What are some possible causes of OBDII code C0805 in a 2017 GMC Sierra?

- Possible causes may include a faulty power steering control module, damaged wiring or connectors in the power steering system, or a malfunctioning power steering motor.

3. How can I diagnose OBDII code C0805 in my 2017 GMC Sierra?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the power steering system components, and testing the power steering control module and related circuits.

4. Is it safe to continue driving my 2017 GMC Sierra with OBDII code C0805?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential safety issues and further damage to the power steering system.

5. How can I repair OBDII code C0805 in my 2017 GMC Sierra?

- Repairing this code may involve replacing the power steering control module, repairing any damaged wiring or connectors, or addressing any issues with the power steering motor.

6. Can a DIY enthusiast fix OBDII code C0805 in a 2017 GMC Sierra?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing OBDII code C0805 may require specialized tools and expertise best handled by a professional mechanic.

7. How much does it typically cost to repair OBDII code C0805 in a 2017 GMC Sierra?

- The cost of repairing this code can vary depending on the specific issue causing it, but it may range from a few hundred dollars for minor repairs to over a thousand dollars for more complex issues.

8. Will resetting the OBDII code C0805 in my 2017 GMC Sierra make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reappear once the vehicle is driven again.

9. Can extreme weather conditions affect the occurrence of OBDII code C0805 in a 2017 GMC Sierra?

- Yes, extreme temperatures or weather conditions can potentially impact the performance of the power steering system and contribute to the triggering of OBDII code C0805.

10. Is OBDII code C0805 a common issue in 2017 GMC Sierra vehicles?

- While not as common as some other OBDII codes, C0805 related to the Control Module Power 2 Circuit can still occur in 2017 GMC Sierra vehicles due to various factors affecting the power steering system.