U0114
Lost Communication With Four-Wheel Drive Clutch Control Module
Network / communication
Generic OBD-II
Medium
What it means
U0114 sets when the network loses contact with the four-wheel-drive clutch control module, which manages power transfer to the driven axles. The 4WD/AWD system usually drops into a safe default and its warning light comes on; the vehicle still drives, but four-wheel-drive engagement may be limited or unavailable.
Medium
Can I keep driving? Drivable, but four-wheel drive may be limited or off and traction reduced — take care in low-grip conditions and avoid demanding off-road use until fixed.
Common symptoms
What you'll notice
- 4WD/AWD or service-4WD warning light on
- Four-wheel drive won't engage or stays in a default mode
- 4WD clutch module unreachable with a scan tool
- Reduced traction or unexpected drivetrain behavior
Common causes
Most likely first
- Blown fuse or lost power/ground to the 4WD clutch moduleLikely
- Damaged or corroded wiring or connector at the moduleCommon
- CAN bus fault between the module and the networkCommon
- Failed 4WD clutch control moduleLess often
- Low battery or charging voltageLess often
How to diagnose & fix
Work through it in order
- Scan all modules to see whether other units also lost communication.
- Check the fuse, power, and ground for the 4WD clutch module.
- Inspect the module connector and harness — these live in exposed underbody areas prone to corrosion.
- Test the CAN bus wiring to the module for continuity and resistance.
- If supply and bus check out, the module is the likely fault.
FAQ
Quick answers
Is it safe to drive with U0114?+
For normal road driving usually yes, but four-wheel drive may be unavailable. Avoid relying on 4WD in snow, mud, or off-road until it's repaired.
Can I just clear U0114?+
It returns if the module still can't be reached. Repair the wiring, supply, or module first.
Related codes
Often seen with U0114
Read & clear U0114 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX