EVAP System Leak Detected (Fuel Cap Loose/Off)

Q: What does code P0457 mean?

EVAP System Leak Detected (Fuel Cap Loose/Off): The EVAP system has detected a leak consistent with a loose or missing fuel cap. Tighten or replace the gas cap and clear the code.

Powertrain Code · Low

What does P0457 mean?

The EVAP system has detected a leak consistent with a loose or missing fuel cap. Tighten or replace the gas cap and clear the code.

System: EVAP System

P0457 is a powertrain diagnostic trouble code indicating evap system leak detected (fuel cap loose/off). This code is classified as low severity, which means: minor issue — monitor and fix at convenience.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.