AutoCodes – Generic – C0315

C0315 Code - Module Ground Circuit

Quick Answer

The transfer case motor is a bi-directional, permanent magnet, D.C. Common causes include Faulty Transfer Case Shift Control Module, Transfer Case Shift Control Module harness is open or shorted, Transfer Case Shift Control Module circuit poor electrical connection. 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: C0315 indicates Module Ground Circuit.
Common causes: Common causes include Faulty Transfer Case Shift Control Module, Transfer Case Shift Control Module harness is open or shorted, Transfer Case Shift Control Module circuit poor electrical connection.
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 4,969

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 Jun 18, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0315 Description

The transfer case motor is a bi-directional, permanent magnet, D.C. motor. When energized, (through Motor Control A or Motor Control B, the ground is provided by the opposing Motor Control circuit and then grounded through the transfer case shift control module ground circuit), the motor, through a series of gears, rotates a shaft which moves the mode and range forks to shift the transfer case between 4H, AUTO 4WD, 2H, N, and 4L ranges. While the transfer case motor is energized the transfer case shift control module also energizes the solenoid for the transfer case lock. The motor lock is disabled (locking action released) and free turning of the transfer case motor and sector shaft is then allowed.

OBDII Code C0315 - Module Ground Circuit - AutoCodes.com — C0315 Code - Module Ground Circuit

What does this mean?

What are the Possible Causes of the DTC C0315?

Faulty Transfer Case Shift Control Module
Transfer Case Shift Control Module harness is open or shorted
Transfer Case Shift Control Module circuit poor electrical connection

How to Fix the DTC C0315?

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 does this mean?

Code Tech Notes

Transfer Case Shift Control Module

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0315 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 C0315 code?

Need more information on how to fix the C0315 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0315 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0315 Buick — Module Ground Circuit
C0315 Cadillac — Module Ground Circuit
C0315 Chevrolet — Module Ground Circuit
C0315 GMC — Module Ground Circuit

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 C0315 Code

1. What are the common symptoms of OBDII code C0315 (Module Ground Circuit)?

- Common symptoms of code C0315 include intermittent or constant illumination of the ABS or traction control warning lights on the dashboard.

2. What are the possible causes of OBDII code C0315 (Module Ground Circuit)?

- The likely causes of code C0315 are a poor electrical connection, damaged wiring harness, or a faulty module ground circuit within the ABS or traction control system.

3. How can I diagnose OBDII code C0315 (Module Ground Circuit)?

- To diagnose code C0315, a technician will use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the ABS and traction control system components for any visible damage or loose connections.

4. Can I drive my vehicle with OBDII code C0315 (Module Ground Circuit) present?

- It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to prevent potential safety concerns related to the ABS and traction control systems.

5. How can I repair OBDII code C0315 (Module Ground Circuit)?

- Repairing code C0315 involves inspecting and repairing any damaged wiring, ensuring proper electrical connections, or replacing the faulty module ground circuit within the ABS or traction control system.

6. Is it possible to reset OBDII code C0315 (Module Ground Circuit) without repairs?

- Resetting the code without addressing the underlying issue will likely result in the code reappearing. It is important to diagnose and repair the root cause of the problem to prevent further issues.

7. Are there any DIY tips for addressing OBDII code C0315 (Module Ground Circuit)?

- DIY tips for addressing this code include checking for loose connections, inspecting the wiring harness for damage, and ensuring all components within the ABS and traction control systems are properly secured.

8. How much does it typically cost to repair OBDII code C0315 (Module Ground Circuit) at a repair shop?

- The cost of repairing code C0315 can vary depending on the extent of the damage and the specific repairs needed, but it may range from $100 to $300 at a repair shop.

9. Can a faulty ABS or traction control module cause OBDII code C0315 (Module Ground Circuit)?

- Yes, a faulty ABS or traction control module can potentially cause code C0315 if there are issues with the module ground circuit, requiring inspection and possible replacement of the module.

10. Will fixing OBDII code C0315 (Module Ground Circuit) improve my vehicle's performance?

- Addressing code C0315 can restore proper functioning of the ABS and traction control systems, ensuring optimal performance and safety while driving.