P0402Średni
Układ EGR — nadmierny przepływ
Układ napędowy
Sprawdź szczegóły →P0401O
ŚredniEGR — Insufficient Flow (Opel)
OBD-II (EN): EGR Flow Insufficient
Code P0401O — EGR — Insufficient Flow (Opel). Symptoms: check engine light. Possible cause: clogged EGR with carbon (1.7 CDTI). Professional diagnosis recommended.
Symptoms
Check engine light, jerking, increased emissions
Possible causes
Clogged EGR with carbon (1.7 CDTI, 2.0 CDTI), faulty stepper motor, clogged EGR cooler
Affected systems
Related codes
Universal version
This code has a universal OBD-II form:
P0401Recyrkulacja spalin (EGR) — niewystarczający przepływCode P0401O appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P0401O 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.