U0114moderate severityNetwork
Lost Communication with 4WD Clutch Control Module
on 2012 Chevrolet Impala 3.6L V6 · FWD
What this code means
Cannot communicate with the four-wheel drive clutch engagement module.
Symptoms
- 4WD warning light on
- AWD system inoperative
- Cannot engage 4WD
- Drivetrain vibration
Common causes
- 4WD clutch module failure
- CAN bus wiring
- Fuse blown
- Module connector corrosion
- Module water damage
Diagnostic steps
- Check 4WD module fuse
- Test power and ground
- Check CAN wiring
- Inspect module for water damage
- Try direct communication
Repair notes
Check fuses and inspect for water damage. Module often located under vehicle.
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