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C0805 2015 Chevrolet Silverado Code - Control Module Power 2 Circuit

Quick Answer

The C0805 diagnostic trouble code (DTC) for the 2015 Chevrolet Silverado indicates a malfunction in the Control Module Power 2 Circuit. Common causes include Wiring Issues: Damaged or corroded wiring in the Control Module Power 2 Circuit can disrupt power supply, Faulty Connectors: Loose or damaged connectors that fail to provide a stable connection can trigger this code, Control Module Failure: A malfunctioning control module itself may fail to receive or distribute power correctly. 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 2015 Chevrolet Silverado indicates Control Module Power 2 Circuit.
Common causes
Common causes include Wiring Issues: Damaged or corroded wiring in the Control Module Power 2 Circuit can disrupt power supply, Faulty Connectors: Loose or damaged connectors that fail to provide a stable connection can trigger this code, Control Module Failure: A malfunctioning control module itself may fail to receive or distribute power correctly.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 11, 2024
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Code C0805 2015 Chevrolet Silverado Description

The C0805 diagnostic trouble code (DTC) for the 2015 Chevrolet Silverado indicates a malfunction in the Control Module Power 2 Circuit. This code is primarily associated with the vehicle's electronic control units (ECUs), which are responsible for managing various systems, including engine performance, transmission control, and safety features. When the power supply to one of these modules is interrupted or insufficient, it can lead to a range of performance issues.

OBDII Code C0805 2015 Chevrolet Silverado - Control Module Power 2 Circuit
C0805 2015 Chevrolet Silverado Code - Control Module Power 2 Circuit

Common Causes of C0805 2015 Chevrolet Silverado

  1. Wiring Issues: Damaged or corroded wiring in the Control Module Power 2 Circuit can disrupt power supply.
  2. Faulty Connectors: Loose or damaged connectors that fail to provide a stable connection can trigger this code.
  3. Control Module Failure: A malfunctioning control module itself may fail to receive or distribute power correctly.
  4. Blown Fuses: A blown fuse in the power distribution circuit can interrupt power to the control module.
  5. Battery Issues: Weak or failing batteries can lead to insufficient voltage being supplied to the control modules.

Symptoms of C0805 2015 Chevrolet Silverado

  1. Warning Lights: The illumination of the check engine light or other warning indicators on the dashboard.
  2. Erratic Performance: Unpredictable behavior in vehicle systems, such as sudden loss of power or inconsistent braking performance.
  3. System Failures: Malfunctioning of systems that rely on the affected control module, such as ABS or traction control.
  4. Communication Errors: Difficulty in communication between control modules, leading to diagnostic trouble codes in multiple systems.
  5. Reduced Fuel Efficiency: A noticeable decrease in fuel economy due to improper engine management.

How to Fix C0805 2015 Chevrolet Silverado

  1. Visual Inspection: Begin with a thorough visual inspection of the wiring and connectors associated with the Control Module Power 2 Circuit for signs of damage or corrosion.
  2. Check Fuses: Inspect and replace any blown fuses in the power distribution circuit that may affect the control module.
  3. Test Voltage: Use a multimeter to check the voltage at the control module to ensure it is receiving the appropriate power supply.
  4. Repair or Replace Wiring: If damaged wiring is found, repair or replace it to restore proper electrical connections.
  5. Control Module Testing: If all other components are functioning correctly, consider testing or replacing the control module itself to resolve the issue.

Cost to Fix C0805 2015 Chevrolet Silverado

The cost to repair the C0805 code can vary widely based on the underlying cause and the specific repairs needed. On average, you might expect to pay between $200 and $800 for repairs, which includes parts and labor. Simple fixes like replacing a blown fuse or repairing wiring may cost less, while control module replacement can be significantly more expensive.

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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 C0805 2015 Chevrolet Silverado Code

1. What does OBDII code C0805 mean on a 2015 Chevrolet Silverado?

C0805 indicates an issue with the Control Module Power 2 Circuit, which relates to a problem in the electrical power supply to a control module.

2. What are the common symptoms of code C0805 in a 2015 Chevrolet Silverado?

Symptoms may include warning lights on the dashboard, issues with vehicle stability systems, malfunctioning electronic components, or intermittent electrical failures.

3. What causes OBDII code C0805 in a 2015 Chevrolet Silverado?

Common causes include a blown fuse, poor electrical connections, damaged wiring, or a faulty control module.

4. How can I diagnose code C0805 on a 2015 Chevrolet Silverado?

Start by inspecting the fuses and wiring for damage or corrosion, checking the connectors for loose or dirty pins, and testing the power supply to the affected control module.

5. Can a bad battery trigger code C0805 on a 2015 Chevrolet Silverado?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code.

6. Is it safe to drive a 2015 Chevrolet Silverado with code C0805 active?

Driving with this code may lead to issues with stability or electronic systems, so it’s recommended to address the problem promptly.

7. How do I fix code C0805 on a 2015 Chevrolet Silverado?

Fixes may include replacing a blown fuse, repairing damaged wiring, cleaning or securing electrical connections, or replacing the affected control module if necessary.

8. What tools are needed to troubleshoot code C0805 on a 2015 Chevrolet Silverado?

You’ll need an OBDII scanner, a multimeter for testing voltage, and basic tools to inspect and repair wiring or fuses.

9. Can a software issue cause code C0805 on a 2015 Chevrolet Silverado?

While rare, a software issue in the control module could potentially cause this code. Reprogramming or updating the module may be required in such cases.

10. What is the cost of repairing code C0805 on a 2015 Chevrolet Silverado?

Costs vary depending on the issue but may range from replacing a fuse (minimal cost) to replacing or reprogramming a control module, which could cost several hundred dollars.

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