U0230
Lost Communication With Rear Gate Module
Body / comfort network
Generic OBD-II
Low
What it means
U0230 means the car has lost communication with the rear gate module — the controller for the power liftgate or tailgate. Power open/close, hands-free, and soft-close features may stop working, but you can normally still open the gate manually. It doesn't affect how the car drives.
Low
Can I keep driving? Yes — the car drives normally; only the power liftgate/tailgate is affected, and it can usually still be operated by hand.
Common symptoms
What you'll notice
- Power liftgate/tailgate won't open or close with the button or key fob
- Hands-free (foot-kick) liftgate not responding
- Soft-close or auto-close disabled; gate must be operated by hand
- Warning message about the liftgate or rear gate
Common causes
Most likely first
- Broken wire in the liftgate harness boot, which flexes every time the gate moves (very common)Likely
- Corrosion or water intrusion at the gate connectorCommon
- Failed rear gate/liftgate control moduleCommon
- Blown fuse or a power/ground fault to the moduleLess often
- Damaged network (bus) wiring to the moduleLess often
How to diagnose & fix
Work through it in order
- Scan modules and confirm the rear gate module is not reporting.
- Inspect the harness at the liftgate hinge/boot for broken conductors.
- Check the gate connectors and the liftgate fuse.
- Test power, ground, and bus continuity to the module.
- Repair the wiring or replace the module, then recalibrate liftgate travel if required. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0230?+
Yes. Only the powered liftgate/tailgate function is affected; the car drives normally and the gate can usually still be opened manually.
Can I just clear U0230?+
You can, but it returns unless the wiring or module is repaired — the liftgate harness is a common break point.
Related codes
Often seen with U0230
Read & clear U0230 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