P0401Średni
Recyrkulacja spalin (EGR) — niewystarczający przepływ
Układ napędowy
Sprawdź szczegóły →P0402
ŚredniEGR System — Excessive Flow
OBD-II (EN): Exhaust Gas Recirculation Flow Excessive Detected
Code P0402 — EGR System — Excessive Flow. Symptoms: unstable idle. Possible cause: EGR valve stuck open. Professional diagnosis recommended.
Symptoms
Unstable idle, engine stalling at idle, black smoke
Possible causes
EGR valve stuck open, vacuum diaphragm leak, faulty EGR position sensor signal
Affected systems
Related codes
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P0402 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.