U0195
NetworkModule Communicationhigh severityLost Communication with 4WD Control Module
What U0195 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
Where to start: Check fuses and transfer case actuator. Module may need reprogramming after replacement.
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