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C0870 2016 Chevrolet Silverado Code - Control Module Voltage Reference

Quick Answer

The C0870 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Control Module Voltage Reference. Common causes include Faulty Voltage Regulator: A malfunctioning voltage regulator can disrupt the voltage reference signal sent to the control module, Wiring or Connector Damage: Damaged wiring or connectors in the voltage reference circuit can lead to poor signal transmission, Control Module Malfunction: A faulty control module may not be receiving the correct voltage reference signal, triggering the C0870 code. 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
C0870 2016 Chevrolet Silverado indicates Control Module Voltage Reference.
Common causes
Common causes include Faulty Voltage Regulator: A malfunctioning voltage regulator can disrupt the voltage reference signal sent to the control module, Wiring or Connector Damage: Damaged wiring or connectors in the voltage reference circuit can lead to poor signal transmission, Control Module Malfunction: A faulty control module may not be receiving the correct voltage reference signal, triggering the C0870 code.
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 Sep 15, 2024
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Code C0870 2016 Chevrolet Silverado Description

The C0870 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Control Module Voltage Reference. This code indicates that there is an issue with the voltage reference signal being sent to one of the control modules in the vehicle. The control module voltage reference is crucial for the proper functioning of various systems within the vehicle, as it provides a stable voltage signal for the control modules to operate effectively.

OBDII Code C0870 2016 Chevrolet Silverado - Control Module Voltage Reference
C0870 2016 Chevrolet Silverado Code - Control Module Voltage Reference

Common Causes of C0870 2016 Chevrolet Silverado

  1. Faulty Voltage Regulator: A malfunctioning voltage regulator can disrupt the voltage reference signal sent to the control module.
  2. Wiring or Connector Damage: Damaged wiring or connectors in the voltage reference circuit can lead to poor signal transmission.
  3. Control Module Malfunction: A faulty control module may not be receiving the correct voltage reference signal, triggering the C0870 code.
  4. Battery or Alternator Issues: Problems with the vehicle's battery or alternator can affect the stability of the voltage reference signal.

Symptoms of C0870 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the C0870 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Poor Performance: The vehicle may experience reduced performance, including sluggish acceleration and decreased power output.
  3. Erratic Behavior: Systems such as ABS, traction control, or transmission may exhibit erratic behavior or fail to function properly.
  4. Rough Idling: The engine may idle roughly or inconsistently, indicating a potential issue with the control module voltage reference.
  5. Stalling: In severe cases, the vehicle may stall unexpectedly, especially during acceleration or deceleration.

How to Fix C0870 2016 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the DTC and perform a thorough inspection of the control module voltage reference circuit.
  2. Check Voltage Regulator: Test the voltage regulator to ensure it is functioning correctly and providing a stable voltage output.
  3. Inspect Wiring and Connectors: Check for any damage or corrosion in the wiring and connectors related to the voltage reference circuit.
  4. Test Control Module: Verify the functionality of the control module by testing its response to the voltage reference signal.
  5. Repair or Replace Components: Repair or replace any faulty components identified during the diagnostic process, such as the voltage regulator, wiring, connectors, or control module.

Cost to Fix C0870 2016 Chevrolet Silverado

The typical repair costs for addressing the C0870 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts such as a voltage regulator, wiring, or a control module can range from $100 to $500 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to several hundred dollars or more.

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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 C0870 2016 Chevrolet Silverado Code

1. What does the OBDII code C0870 mean on a 2016 Chevrolet Silverado?

Code C0870 indicates an issue with the control module voltage reference circuit, typically caused by a voltage irregularity or disruption.

2. What are the common symptoms of code C0870 in a Chevrolet Silverado?

Symptoms may include warning lights on the dashboard, erratic electrical behavior, and possible loss of functionality in certain vehicle systems.

3. What causes the C0870 code in a 2016 Chevrolet Silverado?

Common causes include a faulty control module, damaged wiring or connectors, poor grounding, or a malfunctioning sensor on the voltage reference circuit.

4. Can I drive my Silverado with a C0870 code?

While the truck may still be drivable, it’s not recommended as the issue can affect critical systems and lead to further damage.

5. How do I fix a C0870 code on my Silverado?

Repairs may involve inspecting and repairing wiring, replacing a faulty control module or sensor, and ensuring proper grounding and voltage levels.

6. How is the C0870 code diagnosed?

A technician will use a scan tool to verify the code, inspect the voltage reference circuit, and test the wiring, connectors, and related components for faults.

7. Can a weak battery cause the C0870 code?

Yes, a weak or failing battery can result in voltage irregularities that trigger the C0870 code.

8. How much does it cost to repair the C0870 code on a 2016 Silverado?

Repair costs can vary widely depending on the root cause, ranging from $100 for minor wiring repairs to $500 or more if a control module needs replacement.

9. What is the voltage reference circuit in a 2016 Chevrolet Silverado?

The voltage reference circuit supplies a stable voltage to sensors and modules, ensuring accurate readings and proper system operation.

10. How can I prevent the C0870 code from recurring?

Regular maintenance, such as inspecting wiring for damage, ensuring the battery is in good condition, and addressing electrical issues promptly, can help prevent this code.

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