P0440 — Evaporative emission (EVAP) system fault.

Code P0440 is a standard OBD-II diagnostic trouble code: Evaporative emission (EVAP) system fault.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0440 across 8 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 P0440 8 patterns

2017 Chrysler Pacifica

powertrain — Transmission shift lockout / unable to shift into or out of park

2015 Jeep Grand Cherokee

electrical — Repeated electrical and transmission diagnostic codes without resolution

2012 GMC Terrain

electrical — Check Engine light with fuel cap sensor and emission control faults

2008 Jeep Liberty

fuel system — Fuel tank overflow during refueling

2007 Chrysler Pacifica

steering — Engine stalling with power steering/braking loss

2007 Chrysler Pacifica

fuel system — Fuel pump failure

2006 Suzuki Forenza

engine — Check Engine Light - O2 Sensor / Emissions Related

2005 Pontiac Vibe

engine — Engine stalling / failure to start

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 →