AutoCodes – Generic – C140A

C140A Code - Transfer Case Motor Performance

Quick Answer

The Final Drive Control Module monitors the Transfer Case Motor. Common causes include Faulty Transfer Case Motor, 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: C140A indicates Transfer Case Motor Performance.
Common causes: Common causes include Faulty Transfer Case Motor, 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 3,101

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 Sep 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C140A Description

The Final Drive Control Module monitors the Transfer Case Motor. The Final Drive Control Module sets the OBDII code when the Transfer Case Motor is not to factory specifications.

OBDII Code C140A - Transfer Case Motor Performance - AutoCodes.com — C140A Code - Transfer Case Motor Performance

What does this mean?

What are the Possible Causes of the DTC C140A?

Faulty Transfer Case Motor
Transfer Case Motor harness is open or shorted
Transfer Case Motor circuit poor electrical connection
Faulty Final Drive Control Module

How to Fix the DTC C140A?

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 C140A 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 C140A code?

Need more information on how to fix the C140A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C140A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C140A Chrysler — Transfer Case Motor Performance
C140A Dodge — Transfer Case Motor Performance
C140A Jeep — Transfer Case Motor Performance

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 C140A Code

1. What are common symptoms of OBDII code C140A (Transfer Case Motor Performance)?

- Common symptoms include difficulty shifting gears, abnormal noises from the transfer case, and dashboard warning lights related to the 4WD system.

2. What are possible causes of OBDII code C140A?

- Possible causes include a faulty transfer case motor, damaged transfer case gears, electrical issues, or a malfunctioning transfer case control module.

3. How can I diagnose the cause of OBDII code C140A?

- Diagnosing the issue involves conducting a visual inspection of the transfer case components, checking for loose or damaged wiring, and using a scan tool to retrieve specific error codes.

4. Can I continue driving with OBDII code C140A?

- It is not recommended to continue driving with this code present, as it may lead to further damage to the transfer case components and affect the vehicle's drivability.

5. How can OBDII code C140A be repaired?

- Repair options include replacing the transfer case motor, repairing damaged wiring, resetting error codes with a scan tool, or seeking professional assistance for a more thorough diagnosis.

6. Are there any DIY tips for fixing OBDII code C140A?

- DIY tips include checking and tightening electrical connections, inspecting transfer case components for visible damage, and clearing error codes to see if the issue recurs.

7. Is OBDII code C140A specific to certain vehicle makes or models?

- This code can be found in various vehicle makes and models equipped with a transfer case and 4WD system, but the specific diagnostic and repair procedures may vary.

8. Can weather or driving conditions trigger OBDII code C140A?

- Extreme weather conditions, off-road driving, or excessive strain on the transfer case system can potentially trigger this code by causing stress on the motor or related components.

9. How urgent is it to address OBDII code C140A?

- It is recommended to address this code promptly to prevent further damage to the transfer case system, ensure safe operation of the vehicle, and avoid potential drivability issues.

10. What should I do if OBDII code C140A keeps coming back after repairs?

- If the code persists after repairs, it may indicate an underlying issue that requires further diagnosis by a qualified mechanic or technician familiar with transfer case systems.