U0102
Lost Communication With Transfer Case Control Module
U0102 is an OBD-II diagnostic trouble code meaning: Lost Communication With Transfer Case Control Module. Common causes: broken or damaged wires in the communication circuit, poor contact in module connectors. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Four-wheel drive does not work
- Switching drive modes is not possible
- The car goes into emergency mode
Causes
- Broken or damaged wires in the communication circuit
- Poor contact in module connectors
- Transfer case control module malfunction
- Module power problems
- Software failure in the module
How to Fix
- Check the integrity of the wiring harness to the module
- Inspect and clean the connector contacts
- Check fuses and relays associated with the module
- Test the control module on the bench
- If necessary, replace the control module
Related codes
Error U0102 by Vehicle Brand
FAQ
What does the U0102 code mean?
U0102 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Transfer Case Control Module
What causes a U0102 error code?
The most common causes of U0102 include: Broken or damaged wires in the communication circuit; Poor contact in module connectors; Transfer case control module malfunction; Module power problems.
How do I fix a U0102 diagnostic trouble code?
To fix U0102: Check the integrity of the wiring harness to the module. Inspect and clean the connector contacts. Check fuses and relays associated with the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0102?
Yes, but get it checked soon
How much does it cost to fix U0102?
The estimated repair cost for U0102 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat