AutoCodes – Jeep – U112C Jeep

U112C Jeep Code - Lost Communication With Transfer Case Switch Bank Module

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Transfer Case Switch. Common causes include Faulty Transfer Case Switch, Transfer Case Switch harness is open or shorted, Transfer Case Switch 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
U112C Jeep indicates Lost Communication With Transfer Case Switch Bank Module.
Common causes
Common causes include Faulty Transfer Case Switch, Transfer Case Switch harness is open or shorted, Transfer Case Switch 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 713
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 22, 2020
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Code U112C Jeep Description

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Transfer Case Switch.
OBDII Code U112C Jeep - Lost Communication With Transfer Case Switch Bank Module - AutoCodes.com
U112C Jeep Code - Lost Communication With Transfer Case Switch Bank Module

What are the Possible Causes of the DTC U112C Jeep?

  • Faulty Transfer Case Switch
  • Transfer Case Switch harness is open or shorted
  • Transfer Case Switch circuit poor electrical connection

How to Fix the DTC U112C Jeep?

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 U112C Jeep 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 U112C Jeep code?

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Need Help with the Code?

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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 U112C Jeep Code

1. What are the common symptoms of OBDII code U112C in a Jeep related to the Transfer Case Switch Bank Module?

- Common symptoms include the inability to shift gears, issues with engaging 4WD, warning lights on the dashboard, and erratic behavior of the transfer case.

2. What are the possible causes of OBDII code U112C indicating a lost communication with the Transfer Case Switch Bank Module in a Jeep?

- Possible causes can include faulty wiring connections, a malfunctioning transfer case switch, a defective Transfer Case Control Module (TCCM), or a communication network failure.

3. How can I diagnose the root cause of OBDII code U112C in my Jeep experiencing communication problems with the Transfer Case Switch Bank Module?

- Diagnosis involves checking the wiring connections, inspecting the transfer case switch for proper functioning, testing the TCCM, and using a scan tool to identify communication faults within the network.

4. Is it safe to continue driving my Jeep with the U112C code related to the Transfer Case Switch Bank Module communication issue?

- It is not recommended to drive the vehicle with this code present, as it may lead to unpredictable behavior of the transfer case and potentially compromise the safety and performance of the vehicle.

5. What are some repair tips for fixing the U112C code in a Jeep due to lost communication with the Transfer Case Switch Bank Module?

- Repair tips include checking and repairing any damaged wiring, replacing the transfer case switch if faulty, reprogramming the TCCM if necessary, and ensuring proper communication within the network.

6. Can a DIY enthusiast fix the U112C code related to the Transfer Case Switch Bank Module issue in a Jeep, or is professional help required?

- Depending on the complexity of the issue, some DIY enthusiasts may be able to fix the problem by following repair guides and utilizing basic tools. However, for more advanced diagnostics and repairs, professional help may be necessary.

7. Are there any recalls or technical service bulletins (TSBs) related to the U112C code and the Transfer Case Switch Bank Module in Jeep vehicles?

- It is advisable to check with the manufacturer or authorized dealerships for any recalls or TSBs related to this specific OBDII code and the associated components in Jeep vehicles.

8. How much can I expect to pay for repairing the U112C code indicating lost communication with the Transfer Case Switch Bank Module in my Jeep?

- The cost of repair can vary depending on the root cause of the issue, the extent of the repairs needed, and whether you choose to go to a dealership or an independent mechanic. Costs may range from a few hundred to over a thousand dollars.

9. Can a software update or reflash help resolve the U112C code related to the Transfer Case Switch Bank Module communication problem in a Jeep?

- In some cases, performing a software update or reflash on the TCCM may help resolve communication issues and clear the U112C code. It is recommended to consult with a professional for guidance on this procedure.

10. How long does it typically take to diagnose and repair the U112C code in a Jeep caused by a lost communication with the Transfer Case Switch Bank Module?

- The diagnosis and repair process can vary in duration depending on the complexity of the issue, availability of parts, and the expertise of the technician. It may take a few hours to a full day to complete the necessary repairs.

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