AutoCodes – Jeep – U0102 Jeep

U0102 Jeep 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 Jeep 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 10,027
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 29, 2020
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Code U0102 Jeep 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 Jeep - Lost Communication With Transfer Case Control Module - AutoCodes.com
U0102 Jeep Code - Lost Communication With Transfer Case Control Module

What are the Possible Causes of the DTC U0102 Jeep?

  • 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 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 U0102 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 U0102 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 U0102 Jeep Code

1. What are the common symptoms of OBDII code U0102 in a Jeep related to the Transfer Case Control Module?

- Common symptoms include the inability to shift gears, erratic shifting, and the illumination of the "Service 4WD System" warning light.

2. What are the possible causes of the U0102 code indicating a lost communication with the Transfer Case Control Module in a Jeep?

- Potential causes may include a faulty transfer case control module, wiring issues, a blown fuse, or a software glitch.

3. How can I diagnose the U0102 code in my Jeep indicating a communication problem with the Transfer Case Control Module?

- Diagnosing the issue involves checking the wiring connections, inspecting the transfer case control module for damage, and using a scan tool to read the code and reset it.

4. Can a DIY enthusiast repair the U0102 code issue related to the Transfer Case Control Module on a Jeep?

- While some basic troubleshooting like checking the connections and fuses can be done by a DIY enthusiast, more complex repairs may require professional assistance.

5. Is it safe to continue driving my Jeep if the U0102 code for the Transfer Case Control Module communication issue is present?

- It is not recommended to drive the vehicle with the U0102 code as it can lead to further damage to the transfer case system and potentially compromise vehicle safety.

6. How much does it typically cost to repair the U0102 code indicating a lost communication with the Transfer Case Control Module in a Jeep?

- Repair costs can vary depending on the underlying issue, but expect to pay anywhere from $200 to $800 for diagnosis and repair.

7. Are there any preventive measures to avoid encountering the U0102 code related to the Transfer Case Control Module in a Jeep?

- Regular maintenance checks, timely software updates, and addressing any warning lights promptly can help prevent issues leading to the U0102 code.

8. Will resetting the OBDII code U0102 related to the Transfer Case Control Module solve the problem in my Jeep?

- Resetting the code may temporarily clear the warning, but if the underlying issue causing the code is not addressed, it is likely to reappear.

9. Can extreme weather conditions or off-road driving contribute to the occurrence of the U0102 code in a Jeep's Transfer Case Control Module?

- Yes, extreme weather conditions and off-road driving can expose the transfer case control module to additional stress, potentially leading to communication issues.

10. How long does it typically take to repair the U0102 code indicating a lost communication with the Transfer Case Control Module in a Jeep?

- The repair time can vary based on the root cause of the issue, but most repairs can be completed within a few hours to a day by a qualified technician.

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