AutoCodes – Dodge – U0102 Dodge

U0102 Dodge Code - Lost Communication With Transfer Case Control Module

Quick Answer

Modules connected to the high speed serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module (TIPM) harness is open or shorted, Totally Integrated Power Module (TIPM) 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: U0102 Dodge indicates Lost Communication With Transfer Case Control Module.
Common causes: Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module (TIPM) harness is open or shorted, Totally Integrated Power Module (TIPM) 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 12,908

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 Mar 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0102 Dodge Description

Modules connected to the high speed serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The OBDII code sets when the bus messages not received from the Totally Integrated Power Module (TIPM) for approximately two to five seconds.

OBDII Code U0102 Dodge - Lost Communication With Transfer Case Control Module - AutoCodes.com — U0102 Dodge Code - Lost Communication With Transfer Case Control Module

What does this mean?

What are the Possible Causes of the DTC U0102 Dodge?

Faulty Totally Integrated Power Module (TIPM)
Totally Integrated Power Module (TIPM) harness is open or shorted
Totally Integrated Power Module (TIPM) circuit poor electrical connection

How to Fix the DTC U0102 Dodge?

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 U0102 Dodge 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.

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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 U0102 Dodge Code

1. What does the OBDII code U0102 Dodge mean?

Code U0102 indicates a communication problem between the vehicle's engine control module (ECM) and the transfer case control module (TCCM).

2. What are the common symptoms of the U0102 code?

Common symptoms of U0102 may include the illumination of the Check Engine light, loss of 4WD functionality, erratic shifting, and in some cases, the vehicle may go into "limp mode."

3. What are the possible causes of the U0102 code?

The U0102 code can be triggered by issues such as a faulty transfer case control module, damaged wiring or connectors, a weak battery, or a problem with the ECM.

4. How do I diagnose the U0102 code in my Dodge?

Diagnosing the U0102 code typically involves using a scan tool to retrieve the specific trouble codes, checking the wiring and connectors for any damage, and testing the transfer case control module for proper functionality.

5. Can I still drive my vehicle with the U0102 code present?

It is not recommended to drive your vehicle with the U0102 code present, as it can affect the proper functioning of the transfer case and potentially lead to further damage if left unresolved.

6. How can I repair the U0102 code in my Dodge?

To repair the U0102 code, you may need to replace the transfer case control module, repair any damaged wiring or connectors, or reprogram the modules involved to restore proper communication.

7. Can a DIY enthusiast fix the U0102 code issue?

While some experienced DIY enthusiasts may be able to diagnose and repair the U0102 code themselves, it is recommended to seek professional help for accurate diagnosis and proper repair to avoid further complications.

8. Are there any preventive measures to avoid the U0102 code in the future?

Regularly inspecting and maintaining the wiring, connectors, and modules involved in the transfer case control system can help prevent issues that may trigger the U0102 code.

9. Is the U0102 code specific to Dodge vehicles only?

While the U0102 code is commonly associated with Dodge vehicles, it can also be found in other makes and models that have a transfer case control module and ECM communication system.

10. How much does it typically cost to repair the U0102 code in a Dodge vehicle?

The cost of repairing the U0102 code can vary depending on the specific cause of the issue, but it may range from a few hundred dollars to over a thousand dollars, including parts and labor.