Lost Communication with Transfer Case Control Module
2007-2012 Nissan Altima 2.5L I4
Description
Cannot communicate with the transfer case control module that manages AWD/4WD operation.
Symptoms
- 4WD/AWD warning light on
- Transfer case stuck in mode
- Cannot switch between 2WD and 4WD
- Service 4WD message
Common Causes
- Transfer case module power failure
- CAN bus wiring to module
- Transfer case module failure
- Fuse blown
- Connector corrosion
Diagnostic Steps
- Check transfer case module fuse
- Test module power and ground
- Inspect CAN bus wiring to module
- Try direct communication with module
- Check connector for corrosion
Repair Notes
Check fuses and power supply first. Common on trucks after water fording.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0102 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code U0102 mean on a 2007-2012 Nissan Altima?
U0102 stands for "Lost Communication with Transfer Case Control Module". Cannot communicate with the transfer case control module that manages AWD/4WD operation.
What are the symptoms of U0102 on a Nissan Altima?
Common symptoms of U0102 include: 4WD/AWD warning light on, Transfer case stuck in mode, Cannot switch between 2WD and 4WD, Service 4WD message.
What causes U0102 on a 2007-2012 Nissan Altima?
Common causes of U0102 include: Transfer case module power failure, CAN bus wiring to module, Transfer case module failure, Fuse blown, Connector corrosion.