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C1402 Jeep Code - Transfer Case Range Select Switch Circuit High

Quick Answer

The C1402 diagnostic trouble code for Jeep vehicles indicates an issue with the Transfer Case Range Select Switch Circuit being too high. Common causes include Faulty transfer case range select switch, Wiring issues or loose connections in the circuit, 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
C1402 Jeep indicates Transfer Case Range Select Switch Circuit High.
Common causes
Common causes include Faulty transfer case range select switch, Wiring issues or loose connections in the circuit, 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 17, 2024
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Code C1402 Jeep Description

The C1402 diagnostic trouble code for Jeep vehicles indicates an issue with the Transfer Case Range Select Switch Circuit being too high. The transfer case range select switch is a critical component that allows the driver to select different modes for the transfer case, such as 2WD, 4WD high, and 4WD low. When this circuit is reading high, it means that the signal being sent by the switch is outside of the expected range, which can lead to various performance issues and potentially affect the vehicle's drivability.

OBDII Code C1402 Jeep - Transfer Case Range Select Switch Circuit High
C1402 Jeep Code - Transfer Case Range Select Switch Circuit High

Common Causes of C1402 Jeep

  1. Faulty transfer case range select switch.
  2. Wiring issues or loose connections in the circuit.
  3. Malfunctioning transfer case control module.
  4. Corrosion or damage to electrical components.
  5. Water intrusion or exposure to the elements.

Symptoms of C1402 Jeep

  1. Check Engine Light illuminated on the dashboard.
  2. Inability to switch between different transfer case modes.
  3. Erratic behavior when engaging 4WD modes.
  4. Loss of power or drivability issues.

How to Fix C1402 Jeep

  1. Begin by conducting a thorough inspection of the transfer case range select switch and its wiring harness to check for any visible damage or loose connections.
  2. Use a multimeter to test the continuity and resistance of the switch to determine if it is functioning correctly.
  3. Inspect the transfer case control module for any signs of damage or corrosion, and ensure that it is receiving the proper signals from the switch.
  4. Replace the transfer case range select switch if it is found to be faulty, and repair any damaged wiring or connections.
  5. Clear the diagnostic trouble codes from the vehicle's computer system and test the transfer case operation to verify that the issue has been resolved.

Cost to Fix C1402 Jeep

The cost of repairing a transfer case range select switch circuit high issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor to address this issue. Keep in mind that diagnostic time and labor rates can vary, so it's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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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 C1402 Jeep Code

1. What are common symptoms of OBDII code C1402 in a Jeep related to the Transfer Case Range Select Switch Circuit High?

The common symptoms include the inability to shift gears in the transfer case, dashboard warning lights related to 4WD system, and potential loss of functionality in the 4WD system.

2. What are possible causes of the OBDII code C1402 in a Jeep indicating Transfer Case Range Select Switch Circuit High?

Possible causes include a faulty transfer case range select switch, damaged wiring or connectors in the circuit, or issues with the transfer case control module.

3. How can I diagnose the OBDII code C1402 in my Jeep for Transfer Case Range Select Switch Circuit High?

Diagnosis involves using a scan tool to read the code, inspecting the transfer case range select switch and its wiring for any visible damage, and testing the switch's functionality.

4. Can I still drive my Jeep with the OBDII code C1402 indicating Transfer Case Range Select Switch Circuit High?

It is not recommended to drive the vehicle with this code active, as it can lead to potential issues with the 4WD system and affect the vehicle's drivability.

5. How can I repair OBDII code C1402 in a Jeep related to Transfer Case Range Select Switch Circuit High?

Repair options include replacing the faulty transfer case range select switch, repairing or replacing damaged wiring or connectors, and resetting the transfer case control module.

6. Are there any DIY tips for fixing the OBDII code C1402 in a Jeep for Transfer Case Range Select Switch Circuit High?

While it's possible to replace the transfer case range select switch yourself, it's recommended to have a professional diagnose and repair this issue due to its complexity.

7. How much does it typically cost to repair OBDII code C1402 in a Jeep indicating Transfer Case Range Select Switch Circuit High?

The cost of repair can vary depending on the specific cause of the issue, but it may range from $200 to $500, including parts and labor.

8. Can a faulty transfer case range select switch cause other issues in my Jeep besides triggering the OBDII code C1402?

Yes, a faulty transfer case range select switch can potentially cause issues with shifting gears in the transfer case, affect the 4WD system's performance, and trigger warning lights on the dashboard.

9. Is it safe to continue driving my Jeep if the OBDII code C1402 for Transfer Case Range Select Switch Circuit High has been cleared?

If the issue has been resolved and the code has been cleared, it should be safe to drive the vehicle. However, if the code reappears, further diagnosis and repair are recommended.

10. How important is it to address the OBDII code C1402 in a Jeep related to Transfer Case Range Select Switch Circuit High promptly?

It is important to address this issue promptly to avoid potential damage to the transfer case system, ensure the proper functioning of the 4WD system, and maintain overall vehicle safety and performance.

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