U0230

Lost Communication With Rear Gate Module

Q: 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.

Q: 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.

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.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear U0230 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX