Technical Definition:
Evaporative Emission System Leak Detected (gross leak/no flow)
Trouble Code: P0455
Address: 0x0455
System: Powertrain
Subsystem:
Address: 0x0455
System: Powertrain
Subsystem:
Technical Description:
Possible Causes:
- A loose or improperly affixed gas cap
- A non-conforming gas cap (i.e. not factory/original brand)
- Other leak or damaged piece in EVAP system
Possible Symptoms:
Evaporative Emission Control System Leak Detected Gross Leak
Possible Solutions:
- Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
- Otherwise, replace the gas cap, and/or
- Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Missing or loose fuel cap
– Incorrect fuel filler cap used
– Fuel filler cap remains open or fails to close
– Foreign matter caught in fuel filler cap
– EVAP canister or fuel tank leaks
– EVAP system hose leaking
– Fuel tank leaking
Specific Makes:
– Possible a noticeable fuel odor caused by the release of fuel vapors