AutoCodes – Chevrolet – C0870 Chevrolet

C0870 Chevrolet Code - Control Module Voltage Reference

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: C0870 Chevrolet indicates Control Module Voltage Reference.
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 4,929

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 C0870 Chevrolet 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 C0870 Chevrolet - Control Module Voltage Reference - AutoCodes.com — C0870 Chevrolet Code - Control Module Voltage Reference

What does this mean?

What are the Possible Causes of the DTC C0870 Chevrolet?

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

How to Fix the DTC C0870 Chevrolet?

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 C0870 Chevrolet 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 C0870 Chevrolet code?

Need more information on how to fix the C0870 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0870 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

C0870 2014 Chevrolet Silverado — Control Module Voltage Reference
C0870 2015 Chevrolet Silverado — Control Module Voltage Reference
C0870 2016 Chevrolet Silverado — Control Module Voltage Reference
C0870 2017 Chevrolet Silverado — Control Module Voltage Reference
C0870 2018 Chevrolet Silverado — Control Module Voltage Reference

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 Chevrolet Code

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

C0870 indicates an issue with the control module voltage reference, often caused by a voltage irregularity or malfunction in the module's reference circuit.

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

Common symptoms include the illumination of the check engine light, erratic vehicle performance, or malfunctioning electrical components.

3. What causes the C0870 code to appear in a Chevrolet?

Possible causes include a failing control module, damaged wiring or connectors in the voltage reference circuit, a weak battery, or a faulty ground connection.

4. Can a low battery trigger the C0870 code in a Chevrolet?

Yes, a low or failing battery can cause voltage irregularities that may trigger the C0870 code.

5. How do you diagnose the C0870 code in a Chevrolet?

Diagnose the issue by using a scan tool to confirm the code, inspecting the voltage reference circuit wiring, checking for proper ground connections, and testing battery voltage.

6. Can you drive a Chevrolet with the C0870 code active?

While the vehicle may still be operational, driving with this code can lead to further electrical issues or reduced performance, so itâ€™s best to address it promptly.

7. How is the C0870 code fixed in a Chevrolet?

Repairs may include replacing damaged wiring, cleaning or repairing ground connections, replacing a weak battery, or, in some cases, replacing the control module.

8. What tools are needed to troubleshoot the C0870 code in a Chevrolet?

A multimeter and an OBDII scan tool are commonly used to check voltage levels, wiring integrity, and to confirm the presence of the code.

9. Can a faulty alternator cause the C0870 code in a Chevrolet?

Yes, a failing alternator that is not providing consistent voltage can lead to control module voltage reference issues and trigger the C0870 code.

10. Is the C0870 code specific to Chevrolet vehicles?

While the code can appear in other vehicle makes, its meaning and diagnostic process may vary. In Chevrolet vehicles, it specifically refers to the control module voltage reference issue.