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U113B Jeep Code - Lost Communication With Switch Bank Module

Quick Answer

The U113B diagnostic trouble code (DTC) for Jeep vehicles indicates that there is a communication failure with the Switch Bank Module (SBM). Common causes include Faulty Switch Bank Module, Wiring issues or shorts, Damaged connectors or wiring harness. 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
U113B Jeep indicates Lost Communication With Switch Bank Module.
Common causes
Common causes include Faulty Switch Bank Module, Wiring issues or shorts, Damaged connectors or wiring harness.
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 07, 2024
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Code U113B Jeep Description

The U113B diagnostic trouble code (DTC) for Jeep vehicles indicates that there is a communication failure with the Switch Bank Module (SBM). The SBM is responsible for managing various functions related to the vehicle's switches, such as those for power windows, door locks, and mirrors. When communication is lost with the SBM, it can lead to a loss of control over these essential functions, impacting the overall convenience and safety of the vehicle.

OBDII Code U113B Jeep - Lost Communication With Switch Bank Module
U113B Jeep Code - Lost Communication With Switch Bank Module

Common Causes of U113B Jeep

  1. Faulty Switch Bank Module
  2. Wiring issues or shorts
  3. Damaged connectors or wiring harness
  4. Network communication errors
  5. Software glitches or programming issues

Symptoms of U113B Jeep

  1. Inoperable power windows
  2. Malfunctioning door locks
  3. Non-responsive electronic mirrors
  4. Interior lights not working
  5. Dashboard warning light illuminated

How to Fix U113B Jeep

  1. Diagnose the DTC using a professional OBD-II scanner to identify the specific cause of the communication failure.
  2. Inspect the wiring harness, connectors, and SBM module for any visible damage or corrosion.
  3. Test the SBM module for proper functionality and replace if necessary.
  4. Repair any wiring faults or shorts in the system.
  5. Clear the DTC and perform a system reset to ensure proper communication is restored.

Cost to Fix U113B Jeep

The cost of repairing a U113B code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair could range from $200 to $500, while the labor costs may add another $100 to $300. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's best to obtain quotes from local service centers 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 U113B Jeep Code

1. What does the OBDII code U113B for Jeep mean?

The code U113B indicates that there is a communication problem with the Switch Bank Module in your Jeep.

2. What are the common symptoms of U113B code in a Jeep?

Common symptoms of the U113B code include issues with power windows, power door locks, and other related functions controlled by the Switch Bank Module.

3. What are the possible causes of the U113B code in a Jeep?

The U113B code in a Jeep can be caused by wiring harness issues, faulty connections, a defective Switch Bank Module, or a communication error between modules.

4. How do I diagnose the U113B code in my Jeep?

Diagnosing the U113B code involves using a diagnostic scanner to retrieve the specific fault code, checking the wiring and connections related to the Switch Bank Module, and testing the module itself for proper functioning.

5. Can I still drive my Jeep with the U113B code present?

It is not recommended to drive your Jeep with the U113B code present, as it can lead to further electrical issues and potential safety hazards.

6. How do I repair the U113B code in my Jeep?

Repairing the U113B code may involve repairing or replacing wiring harnesses, fixing faulty connections, replacing the Switch Bank Module, or reprogramming the module to resolve the communication error.

7. Can I reset the U113B code in my Jeep myself?

You can attempt to clear the U113B code using a diagnostic scanner, but it is recommended to address the underlying issue causing the code before clearing it to prevent it from reoccurring.

8. Will the U113B code cause my check engine light to illuminate?

The U113B code may not directly trigger the check engine light, but it can cause other warning lights related to the affected systems to come on.

9. How much does it cost to repair the U113B code in a Jeep?

The cost of repairing the U113B code in a Jeep can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed.

10. Can the U113B code be related to other OBDII codes in a Jeep?

The U113B code can sometimes be related to other communication error codes in a Jeep, so it is important to diagnose and address all related codes to ensure proper functioning of the vehicle.

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