P0455
Evaporative Emission System Leak Detected (Large Leak)
OBD-II
Fuel vapour (EVAP)
What it means
A large vapour leak. Overwhelmingly the most common cause is a loose, cross-threaded, or missing fuel cap — tighten it and drive a few cycles before spending anything.
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Check your car freeRelated codes
P0440
Evaporative Emission System
Fuel vapour (EVAP)Low
P0441
Evaporative Emission System Incorrect Purge Flow
Fuel vapour (EVAP)Low
P0442
Evaporative Emission System Leak Detected (Small Leak)
Fuel vapour (EVAP)Low
P0443
Evaporative Emission System Purge Control Valve Circuit
Fuel vapour (EVAP)Low
P0444
Evaporative Emission System Purge Control Valve Circuit Open
Fuel vapour (EVAP)Low
P0445
Evaporative Emission System Purge Control Valve Circuit Shorted
Fuel vapour (EVAP)Low
P0446
Evaporative Emission System Vent Control Circuit
Fuel vapour (EVAP)Low
P0447
Evaporative Emission System Vent Control Circuit Open
Fuel vapour (EVAP)Low
General reference only — what a code means can vary by make and model. Confirm with a qualified technician.