U0230 on 2013-2018 Audi S7 (S7 (C7)) — Lost Communication With Rear Gate Module
1 vehicles · 1 makes · $150-$900 repair
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Audi S7 · 2013–2018
On the C7 A7/S7, the reversing camera frequently goes to a black screen (or shows an intermittent 'No Signal' banner) when reverse is selected, even though the parking sensors still beep. The usual root cause is broken conductors in the flexible wiring loom that flexes at the tailgate hinge, not the camera itself; less often the camera module or MMI head unit is at fault. Owners also report the retractable/MMI display mechanism and occasional MMI freezes/restarts on this platform.
Common Symptoms
- Black screen in reverse
- Intermittent 'No Signal' camera banner
- Parking sensors beep but no image
- MMI freeze or random restart
How to Fix
Diagnose with a scan and continuity check of the tailgate-to-body flex harness before replacing the camera. Repair or replace the broken hinge-side loom conductors; if confirmed faulty, replace the camera module. For MMI freezes, apply the latest software update or reset the unit.
Sources for this issue (1)
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U0230 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0230 mean?
U0230 stands for "Lost Communication With Rear Gate Module." A controller is no longer receiving the periodic data-bus messages expected from the Rear Gate (liftgate/tailgate) Module. Set after a calibrated timeout, it indicates lost communication with the power liftgate/rear-gate controller.
What are the most common causes of U0230?
The most common causes of U0230 are: Power/ground loss to the rear gate module, Open/shorted bus wiring (commonly in the liftgate hinge harness), Corroded/loose connectors, Failed rear gate module, Network fault. The specific cause varies by vehicle.
How much does it cost to fix U0230?
Repair costs for U0230 range from $150 to $900, depending on the vehicle and root cause.
Which vehicles are affected by U0230?
Au7o has documented U0230 across 1 vehicle models from 1 manufacturers: Audi.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.