AutoCodes – Saturn – C0870 Saturn

C0870 Saturn 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 Saturn 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 1,042

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

What does this mean?

What are the Possible Causes of the DTC C0870 Saturn?

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

How to Fix the DTC C0870 Saturn?

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 Saturn 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 Saturn code?

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

Need Help with the Code?

Get the C0870 Saturn 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 C0870 Saturn Code

1. What are the common symptoms of OBDII code C0870 in a Saturn related to the Control Module Voltage Reference?

- Common symptoms include rough idling, engine stalling, poor fuel efficiency, and potential issues with the vehicle's transmission.

2. What could cause the OBDII code C0870 to appear in a Saturn?

- The code C0870 is typically triggered by a malfunction in the control module voltage reference circuit, which could be caused by a faulty control module or wiring issue.

3. How can I diagnose the OBDII code C0870 in my Saturn?

- Diagnosing the code C0870 may require using a diagnostic scanner to read the code, testing the control module voltage reference circuit, and checking for any visible signs of damage to the wiring.

4. Can I still drive my Saturn with the OBDII code C0870 present?

- It is not recommended to drive your Saturn with the code C0870 present, as it can lead to further damage to the vehicle and potentially unsafe driving conditions.

5. What are the repair options for fixing the OBDII code C0870 in a Saturn?

- Repair options may include repairing or replacing the control module, fixing any wiring issues, or seeking assistance from a professional mechanic to accurately diagnose and fix the problem.

6. Are there any DIY tips for addressing the OBDII code C0870 in a Saturn?

- DIY tips may include checking the control module connections, inspecting the wiring for any visible damage, and ensuring all connections are secure before seeking professional help if needed.

7. How can I prevent the OBDII code C0870 from reoccurring in my Saturn?

- Regular maintenance, timely repairs, and addressing any electrical issues promptly can help prevent the code C0870 from reoccurring in your Saturn.

8. Is the OBDII code C0870 a serious issue in a Saturn?

- The code C0870 should be addressed promptly, as it can lead to performance issues and potentially cause further damage to the vehicle if left unresolved.

9. Can the OBDII code C0870 in a Saturn be reset without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the underlying issue causing the code C0870 to prevent it from reoccurring in the future.

10. How much does it cost to repair the OBDII code C0870 in a Saturn?

- The cost of repairing the code C0870 can vary depending on the extent of the issue, parts needed for repair, and labor costs. It is recommended to obtain a professional diagnosis for an accurate cost estimate.