AutoCodes – Generic – C0381

C0381 Code - Range Actuator System Performance High Temperature

Quick Answer

The Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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: C0381 indicates Range Actuator System Performance High Temperature.
Common causes: Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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 362

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 05, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0381 Description

The Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. When energized, through the transfer case clockwise circuit or transfer case counterclockwise circuit, the ground is provided by the opposing motor control circuit which becomes grounded through the transfer case control module ground circuit. The transfer case range actuator, through a series of gears, rotates the transfer case control actuator shaft which moves the transfer case two/four-wheel drive actuator cam and transfer case high/low shift fork in order to shift the transfer case between the following modes or ranges: 2WD, 4WD/AWD Automatic, 4WD High/Locked, 4WD Low and Neutral.

OBDII Code C0381 - Range Actuator System Performance High Temperature - AutoCodes.com — C0381 Code - Range Actuator System Performance High Temperature

What does this mean?

What are the Possible Causes of the DTC C0381?

Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator)
Transfer Case Motor harness is open or shorted
Transfer Case Motor circuit poor electrical connection
Faulty Transfer Case Control Module

How to Fix the DTC C0381?

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 C0381 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 C0381 code?

Need more information on how to fix the C0381 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0381 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0381 Buick — Range Actuator System Performance High Temperature
C0381 Cadillac — Range Actuator System Performance High Temperature
C0381 Chevrolet — Range Actuator System Performance High Temperature
C0381 GMC — Range Actuator System Performance High Temperature

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 C0381 Code

1. What does the OBDII code C0381 mean?

Code C0381 indicates an issue with the Range Actuator System, specifically related to its performance under high-temperature conditions.

2. What are the common symptoms of a C0381 code?

Symptoms may include difficulty shifting between drive modes (e.g., 2WD and 4WD), warning lights on the dashboard, reduced drivability, or unusual noises from the transfer case.

3. What causes the C0381 code to appear?

Common causes include overheating of the range actuator motor, electrical issues such as shorted or corroded wiring, a faulty range actuator, or problems with the transfer case fluid.

4. How do I diagnose the C0381 code?

Start by scanning the vehicle with an OBDII scanner to confirm the code, inspect the actuator and wiring for damage, and check the transfer case fluid level and condition.

5. Can I drive with a C0381 code?

Driving with this code is not recommended as it may lead to further damage to the transfer case or drivetrain components.

6. How do I fix the C0381 code?

Repairs may involve replacing the range actuator, repairing or replacing damaged wiring, or flushing and refilling the transfer case with the correct fluid.

7. How much does it cost to fix a C0381 code?

Repair costs vary depending on the issue, but replacing the range actuator can cost between $200 and $600, plus labor.

8. Can low transfer case fluid cause the C0381 code?

Yes, low or degraded transfer case fluid can lead to overheating and performance issues with the range actuator system.

9. Is the C0381 code specific to certain vehicles?

This code is commonly found in vehicles with electronically controlled transfer cases, such as certain GM trucks and SUVs.

10. How can I prevent the C0381 code from occurring?

Regularly inspect and maintain the transfer case fluid, avoid overloading the vehicle, and ensure the actuator system is kept free of dirt and debris.