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C0805 2017 Chevrolet Silverado Code - Control Module Power 2 Circuit

Quick Answer

The C0805 code indicates a malfunction in the Control Module Power 2 Circuit on a 2017 Chevrolet Silverado. Common causes include Faulty wiring or connectors in the Control Module Power 2 Circuit, Blown fuses related to the power supply of control modules, A failing battery or alternator that cannot provide sufficient voltage. 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 Chevrolet Silverado indicates Control Module Power 2 Circuit.
Common causes
Common causes include Faulty wiring or connectors in the Control Module Power 2 Circuit, Blown fuses related to the power supply of control modules, A failing battery or alternator that cannot provide sufficient voltage.
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 24, 2024
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Code C0805 2017 Chevrolet Silverado Description

The C0805 code indicates a malfunction in the Control Module Power 2 Circuit on a 2017 Chevrolet Silverado. This code is part of the vehicle's onboard diagnostics (OBD-II) system, which monitors various electrical components and circuits. The Control Module Power 2 Circuit is responsible for supplying power to various control modules within the vehicle, including but not limited to the engine control module (ECM), transmission control module (TCM), and other critical electronic components.

OBDII Code C0805 2017 Chevrolet Silverado - Control Module Power 2 Circuit
C0805 2017 Chevrolet Silverado Code - Control Module Power 2 Circuit

Common Causes of C0805 2017 Chevrolet Silverado

  1. Faulty wiring or connectors in the Control Module Power 2 Circuit.
  2. Blown fuses related to the power supply of control modules.
  3. A failing battery or alternator that cannot provide sufficient voltage.
  4. Corrosion or damage to the terminals of the control modules.
  5. Malfunctioning control modules that draw excessive current or have internal faults.

Symptoms of C0805 2017 Chevrolet Silverado

  1. Warning lights illuminated on the dashboard, particularly the check engine light.
  2. Erratic or unresponsive behavior of electronic components, such as power windows or locks.
  3. Engine performance issues, including rough idling or stalling.
  4. Inconsistent operation of safety systems, such as traction control or ABS.
  5. Difficulty starting the vehicle or intermittent starting issues.

How to Fix C0805 2017 Chevrolet Silverado

  1. Visual Inspection: Begin with a thorough visual inspection of the wiring and connectors associated with the Control Module Power 2 Circuit. Look for signs of damage, corrosion, or loose connections.
  2. Check Fuses: Inspect the relevant fuses in the vehicle’s fuse box. Replace any blown fuses that may be affecting the power supply to the control modules.
  3. Test Voltage Supply: Use a multimeter to test the voltage at the control modules. Ensure that they are receiving the correct voltage as specified by the manufacturer.
  4. Repair or Replace Wiring: If any damaged wiring or connectors are found, repair or replace them as necessary to restore proper electrical connectivity.
  5. Module Testing: If the problem persists, test the control modules for functionality. If a module is found to be faulty, it may need to be reprogrammed or replaced.

Cost to Fix C0805 2017 Chevrolet Silverado

** The repair costs for addressing a C0805 code can vary significantly based on the specific diagnosis and repairs needed. On average, you might expect to pay between $150 and $500 for repairs, which includes parts and labor. Labor rates typically range from $80 to $150 per hour, depending on the location and type of repair shop. Dealerships often charge higher rates, while independent shops may offer more competitive pricing. It's advisable to obtain quotes from local repair shops to get a more accurate estimate based on your specific situation and location.

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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 2017 Chevrolet Silverado Code

1. What does the OBDII code C0805 mean on a 2017 Chevrolet Silverado?

C0805 indicates an issue with the Control Module Power 2 Circuit, which involves a fault in the power supply to one of the vehicle's control modules.

2. What are common symptoms of code C0805 in a 2017 Chevrolet Silverado?

Symptoms may include warning lights on the dashboard, such as the check engine light or stability control light, and possible electrical system malfunctions.

3. What causes the C0805 code in a 2017 Chevrolet Silverado?

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

4. Can I drive my 2017 Chevrolet Silverado with the C0805 code?

Driving may be possible, but it is not recommended as it could lead to further electrical issues or impaired vehicle performance.

5. How do I diagnose the C0805 code on a 2017 Chevrolet Silverado?

Start by checking fuses, inspecting wiring and connectors for damage, and using a diagnostic scanner to pinpoint the affected circuit or module.

6. What tools are needed to troubleshoot the C0805 code?

Basic tools include a multimeter for testing electrical circuits, a diagnostic scanner, and possibly wiring diagrams for the Silverado.

7. How can I fix the C0805 code on my 2017 Chevrolet Silverado?

Repairs may involve replacing blown fuses, repairing or replacing damaged wires, or addressing a faulty control module.

8. How much does it cost to fix the C0805 code on a 2017 Chevrolet Silverado?

The cost varies depending on the issue. Simple fixes like replacing a fuse may cost less than $20, while control module replacement can cost several hundred dollars.

9. Can a weak battery cause the C0805 code on a 2017 Chevrolet Silverado?

Yes, a weak or failing battery can cause voltage issues that trigger this code; always ensure the battery is in good condition.

10. Do I need a professional mechanic to fix the C0805 code?

While some issues like checking fuses are DIY-friendly, diagnosing and repairing wiring or control modules may require professional expertise.

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