AutoCodes – GMC – C0805 2014 GMC Sierra

C0805 2014 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 2014 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 193

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 2014 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 2014 GMC Sierra - Control Module Power 2 Circuit - AutoCodes.com — C0805 2014 GMC Sierra Code - Control Module Power 2 Circuit

What does this mean?

What are the Possible Causes of the DTC C0805 2014 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 2014 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 2014 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 2014 GMC Sierra code?

Need more information on how to fix the C0805 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0805 2014 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 2014 GMC Sierra Code

1. What does OBDII code C0805 for a 2014 GMC Sierra mean?

The C0805 code indicates an issue with the Control Module Power 2 Circuit in your GMC Sierra.

2. What are the common symptoms of OBDII code C0805 in a 2014 GMC Sierra?

Common symptoms of the C0805 code may include illuminated warning lights on the dashboard, loss of certain vehicle features, and potential drivability issues.

3. What are the possible causes of OBDII code C0805 in a 2014 GMC Sierra?

Potential causes of the C0805 code can include faulty wiring, a defective control module, poor electrical connections, or a blown fuse related to the power circuit.

4. How serious is the OBDII code C0805 in a 2014 GMC Sierra?

While the severity can vary, it is important to address the C0805 code promptly to prevent further electrical system issues or potential drivability concerns.

5. Can I continue driving my 2014 GMC Sierra with OBDII code C0805?

It is not recommended to continue driving your vehicle with an active C0805 fault code, as unresolved electrical issues can lead to further damage or safety risks.

6. How can I diagnose OBDII code C0805 in my 2014 GMC Sierra?

Diagnosing the C0805 code typically involves using a diagnostic scanner to retrieve the specific details of the fault, followed by inspecting the power circuit components for any visible damage.

7. What repairs are typically needed for OBDII code C0805 in a 2014 GMC Sierra?

Repairing the C0805 code may involve repairing or replacing damaged wiring, addressing faulty connections, replacing the control module if necessary, or ensuring proper fuse functionality.

8. Can I reset the OBDII code C0805 in my 2014 GMC Sierra on my own?

While you can attempt to clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

9. How much does it typically cost to repair OBDII code C0805 in a 2014 GMC Sierra?

The cost of repairing the C0805 code can vary depending on the specific cause of the issue, but it may involve wiring repairs, control module replacement, or other electrical system work.

10. Is it recommended to seek professional help for OBDII code C0805 in a 2014 GMC Sierra?

For accurate diagnosis and proper repair of the C0805 fault code, it is advisable to seek assistance from a qualified mechanic or automotive technician familiar with GMC vehicles.