Diagnostic trouble code P0333 on Audi vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0333 mean?
P0333 indicates: Knock Sensor 2 Circuit High.
This relates to the Ignition / misfire system.
Common causes of P0333
knock sensor signal failure causing high circuit condition
sensor bolted/threaded to crankcase may have connection or mounting issue
Parts often involved in P0333
Knock Sensor 2 G66
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 P0333 — 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.
P0333 is a diagnostic trouble code: Knock Sensor 2 Circuit High.
What are the common causes of P0333 on an Audi?
Common causes include: knock sensor signal failure causing high circuit condition, sensor bolted/threaded to crankcase may have connection or mounting issue. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving an Audi with P0333?
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 P0333 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 P0333 on your specific Audi.