U0195high severityNetwork
Lost Communication with 4WD Control Module
on 2015-2019 Subaru Legacy 2.5L H4 · AWD
What this code means
Cannot communicate with the four-wheel drive engagement control module.
Symptoms
- 4WD indicator flashing
- Cannot engage or disengage 4WD
- Service 4WD light
- Drivetrain warning message
Common causes
- 4WD module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Transfer case actuator issue
Diagnostic steps
- Check 4WD module fuse
- Test power and ground
- Check CAN wiring
- Test transfer case actuator motor
- Inspect 4WD switch
Repair notes
Check fuses and transfer case actuator. Module may need reprogramming after replacement.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus