U043300 on Audi: Invalid Data Received From Cruise Control Front Distance Range Sensor (Unauthorized)
Diagnostic trouble code U043300 on Audi vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does U043300 mean?
U043300 indicates: Invalid Data Received From Cruise Control Front Distance Range Sensor (Unauthorized).
This relates to the Network / communication system.
Common causes of U043300
Faulty radar/distance sensor (G258 or G259)
Sensor misalignment (misalignment angle greater than -0.8° to +0.8°)
Sensor visibility impaired by leaves, snow, heavy spray, or dirt
Front bumper removed, re-installed, loosened, or displaced causing sensor misalignment
Sensor not reset or encoded after replacement
What to check (live data)
Sensor misalignment angle (acceptable range: -0.8° to +0.8°)
Parts often involved in U043300
Right Adaptive Cruise Control Sensor G259
Left Adaptive Cruise Control Sensor G258
Distance Regulation Control Module J428
Distance Regulation Control Module 2 J850
Don't replace parts until the root cause is confirmed — many of these codes are caused by wiring, a connector or an upstream fault, not the part itself.
Get the confirmed root cause for U043300 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
U043300 is a diagnostic trouble code: Invalid Data Received From Cruise Control Front Distance Range Sensor (Unauthorized).
What are the common causes of U043300 on an Audi?
Common causes include: Faulty radar/distance sensor (G258 or G259), Sensor misalignment (misalignment angle greater than -0.8° to +0.8°), Sensor visibility impaired by leaves, snow, heavy spray, or dirt, Front bumper removed, re-installed, loosened, or displaced causing sensor misalignment. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving an Audi with U043300?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix U043300 on an Audi?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for U043300 on your specific Audi.