AutoCodes – Generic – U113B

U113B Code - Lost Communication With Switch Bank Module

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Switch Bank Module. Common causes include Faulty Switch Bank Module, Switch Bank Module harness is open or shorted, Switch Bank Module 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: U113B indicates Lost Communication With Switch Bank Module.
Common causes: Common causes include Faulty Switch Bank Module, Switch Bank Module harness is open or shorted, Switch Bank Module 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 12,557

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 Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U113B Description

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Switch Bank Module.

OBDII Code U113B - Lost Communication With Switch Bank Module - AutoCodes.com — U113B Code - Lost Communication With Switch Bank Module

What does this mean?

What are the Possible Causes of the DTC U113B?

Faulty Switch Bank Module
Switch Bank Module harness is open or shorted
Switch Bank Module circuit poor electrical connection

How to Fix the DTC U113B?

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 U113B 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 U113B code?

Need more information on how to fix the U113B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U113B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U113B Chrysler — Lost Communication With Switch Bank Module
U113B Dodge — Lost Communication With Switch Bank Module
U113B Jeep — Lost Communication With Switch Bank Module
U113B RAM — Lost Communication With Switch Bank Module

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 Code

1. What are the common symptoms of OBDII code U113B?

The common symptoms of code U113B include issues with power window operation, door locks not working properly, and problems with interior lighting.

2. What can cause the OBDII code U113B to trigger?

The U113B code is typically triggered when there is a communication failure between the vehicle's switch bank module and the rest of the vehicle's network.

3. How can I diagnose the OBDII code U113B?

Diagnosing code U113B involves using a scan tool to communicate with the vehicle's onboard computer system to identify the specific module that is not communicating properly.

4. Can a faulty switch bank module cause code U113B?

Yes, a faulty switch bank module can cause code U113B if it is not sending or receiving signals correctly within the vehicle's network.

5. What are some repair tips for resolving code U113B?

Repairing code U113B may involve checking the wiring connections to the switch bank module, ensuring there are no loose connections, and potentially replacing the faulty module.

6. How serious is OBDII code U113B?

While code U113B may not directly affect the drivability of the vehicle, it can cause inconvenience and safety issues if critical functions like power windows and door locks are affected.

7. Can I drive my vehicle with the U113B code present?

It is generally not recommended to drive the vehicle with the U113B code present, as it can lead to further electrical issues and potentially compromise the vehicle's safety features.

8. How much does it cost to repair OBDII code U113B?

The cost to repair code U113B can vary depending on the underlying cause, but it may involve labor costs for diagnosis and potential parts replacement for the switch bank module.

9. Can I reset the OBDII code U113B without fixing the issue?

While you can clear the code using a scan tool, it is important to address the underlying issue causing code U113B to prevent it from recurring and potentially causing further problems.

10. Is it possible to prevent OBDII code U113B from occurring?

Regular maintenance and inspections of the vehicle's electrical system, including checking wiring connections and modules, can help prevent code U113B from occurring.