P0455 NISSAN - EVAPorative Emissions Control System Gross Leak Detected.
Possible causes
- Missing or loose fuel cap (most common)
- 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 (not common)
SOURCE: i need to know whatpo455 code means
DTC P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)
This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
This code is for a large leak in the evap system.
Normally the
culprit is the vent control valve on the canister. If it is stuck in the
open position, then the evap system will not hold a vacuum when the car
runs the self test.
You can remove the valve and look inside and see
if it is rusted out. If it looks good, you can also run a jumper wire
off the battery positive and then one to the negative and listen for the
valve to click.
Here is the location of the valve... it is under the car behind the driver side rear wheel
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