P0402 on Volkswagen: Exhaust Gas Recirculation Flow Excessive Detected
Diagnostic trouble code P0402 on Volkswagen vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0402 mean?
P0402 indicates: Exhaust Gas Recirculation Flow Excessive Detected.
This relates to the Emissions / EGR system.
Common causes of P0402
EGR valve stuck open
Faulty EGR sensor
Get the confirmed root cause for P0402 — 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.
P0402 is a diagnostic trouble code: Exhaust Gas Recirculation Flow Excessive Detected.
What are the common causes of P0402 on a Volkswagen?
Common causes include: EGR valve stuck open, Faulty EGR sensor. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving a Volkswagen with P0402?
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 P0402 on a Volkswagen?
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 P0402 on your specific Volkswagen.