P0457 — EVAP system leak detected (fuel cap loose or off)

Code P0457 is a standard OBD-II diagnostic trouble code: EVAP system leak detected (fuel cap loose or off).

In our record, P0457 is reported most often on Ford, Mercury and Dodge vehicles , against engine and fuel system failure patterns , across 2005–2011 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0457 across 5 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0457 5 patterns

2011 Ford Fusion

powertrain — Throttle body failure causing power loss

2010 Mercury Milan

engine — Electronic Throttle Body Malfunction – Loss of Power / Stalling

2007 Dodge Ram 1500

fuel system — Fuel inlet check valve failure / fuel tank inlet valve leak

2006 GMC Envoy

engine — Fuel system and gauge malfunction

2005 Ford Explorer

fuel system — Fuel Gauge Failure—Reads Empty When Tank Is Full

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →