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C140C Dodge Code - Transfer Case Motor Performance Circuit High

Quick Answer

The C140C diagnostic trouble code for Dodge vehicles indicates an issue with the Transfer Case Motor Performance Circuit being too high. Common causes include Faulty transfer case motor, Wiring issues or electrical connections related to the transfer case motor, Malfunctioning transfer case control module. 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
C140C Dodge indicates Transfer Case Motor Performance Circuit High.
Common causes
Common causes include Faulty transfer case motor, Wiring issues or electrical connections related to the transfer case motor, Malfunctioning transfer case control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code C140C Dodge Description

The C140C diagnostic trouble code for Dodge vehicles indicates an issue with the Transfer Case Motor Performance Circuit being too high. The transfer case motor is responsible for engaging and disengaging the vehicle's four-wheel drive system, allowing the driver to switch between 2-wheel drive and 4-wheel drive as needed. In this case, a high circuit performance could indicate a problem with the electrical system or the motor itself.

OBDII Code C140C Dodge - Transfer Case Motor Performance Circuit High
C140C Dodge Code - Transfer Case Motor Performance Circuit High

Common Causes of C140C Dodge

  1. Faulty transfer case motor.
  2. Wiring issues or electrical connections related to the transfer case motor.
  3. Malfunctioning transfer case control module.
  4. Problems with the powertrain control module.
  5. Corrosion or damage to the electrical components in the system.

Symptoms of C140C Dodge

  1. Difficulty engaging or disengaging four-wheel drive.
  2. Illumination of the 4WD warning light on the dashboard.
  3. Unusual noises coming from the transfer case area.
  4. Vehicle experiencing drivability issues, especially in four-wheel drive mode.
  5. Reduced fuel efficiency due to constant engagement of the four-wheel drive system.

How to Fix C140C Dodge

  1. Begin by conducting a thorough inspection of the transfer case motor, wiring, and related components to identify any visible signs of damage or wear.
  2. Use a multimeter to test the voltage and continuity of the circuits connected to the transfer case motor to determine if there are any electrical issues.
  3. If the transfer case motor is found to be faulty, it may need to be replaced with a new unit to restore proper functionality.
  4. Inspect and replace any damaged wiring or electrical connectors that may be causing the high circuit performance issue.
  5. Reset the vehicle's onboard computer system and clear the diagnostic trouble code to see if the issue has been successfully resolved.

Cost to Fix C140C Dodge

The cost of repairing a C140C code related to the Transfer Case Motor Performance Circuit High can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty transfer case motor can range from $300 to $800, including parts and labor. Wiring repairs or replacement may add to the total cost, potentially increasing it to $500 to $1000 or more. Diagnostic time and labor rates at auto repair shops can range from $80 to $150 per hour, so it's advisable to consult with a professional technician for a more accurate estimate based on your vehicle's make and model.

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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 C140C Dodge Code

1. What does the OBDII code C140C mean on a Dodge vehicle?

The C140C code indicates a "Transfer Case Motor Performance Circuit High" fault, meaning there is an issue with the electrical circuit or performance of the transfer case motor.

2. What are the symptoms of the C140C code in a Dodge vehicle?

Common symptoms include the "Service 4WD" light illuminating, failure to shift between 4WD modes, or abnormal noises from the transfer case.

3. What causes the C140C code to appear?

Possible causes include a faulty transfer case motor, damaged wiring or connectors, a blown fuse, or issues with the transfer case control module.

4. How can I diagnose the C140C code on my Dodge?

Start by inspecting the transfer case motor wiring and connectors for damage or corrosion, checking the motor for proper operation, and testing the circuit for high voltage or resistance.

5. Can I drive my Dodge with the C140C code active?

Driving may still be possible, but 4WD functionality could be impaired, especially in off-road or slippery conditions, so it’s best to address the issue promptly.

6. How do I fix the C140C code on a Dodge vehicle?

Repairs may include replacing the transfer case motor, repairing or replacing damaged wiring, clearing corrosion from connectors, or resetting the system after repairs.

7. Is the transfer case motor expensive to replace?

The cost varies depending on the model, but the transfer case motor can range from $200 to $500 for the part, plus labor if done by a professional.

8. Can a bad transfer case motor cause other problems?

Yes, a malfunctioning motor can prevent proper 4WD engagement, cause drivetrain stress, and lead to further damage if not addressed.

9. Do I need to reprogram the system after fixing the C140C code?

In some cases, the transfer case control module may require reprogramming or recalibration after replacing the motor or repairing the circuit.

10. What tools are needed to diagnose and repair the C140C code?

You’ll need an OBDII scanner, multimeter, and basic hand tools to diagnose and repair wiring or replace the transfer case motor.

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