P0456Niski
System EVAP — wykryto bardzo mały wyciek
Układ napędowy
Sprawdź szczegóły →P0457
NiskiEVAP System — Leak (Loose Fuel Cap)
OBD-II (EN): Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)
Code P0457 indicates a fuel vapor leak due to a loose fuel cap. Solution: tighten the cap (until it clicks) or replace the seal. Clear the code and check after 50 km.
Symptoms
Check engine light, fuel smell when refueling, code appears after refueling
Possible causes
Loose/leaking fuel cap, damaged cap seal, missing cap
Affected systems
Silnik spalinowyUkład odparowania paliwa (EVAP)
Related codes
P0440Niski
System EVAP — usterka ogólna
Układ napędowy
Sprawdź szczegóły →Tags and synonyms
Does code P0457 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.