P0455 on a 2023 Nissan Rogue

P0455 means the EVAP system failed a leak check badly enough that the computer sees a large leak or no pressure/vacuum change.

Not your vehicle? See general P0455 info.

Most common causes on the 2023 Nissan Rogue

Ranked from 660 NHTSA owner complaints filed for this vehicle.

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1
Torn or disconnected EVAP vent/purge line
High severity
Continuous, strong gas-vapor complaints (not just intermittent) point to a fully open EVAP leak path rather than a small crack; check hose routing for a split or a popped-off connector.
Reported in 14 NHTSA complaints
Parts:EVAP hose
2
Fuel/vapor line fitting not fully seated after a recall repair
Medium severity
An owner reported an unresolved gas smell after a 'gas line recall' fix, consistent with a line or clip not fully seated during the repair.
Reported in 1 NHTSA complaint
Parts:fuel line clip
3
Missing, loose, or badly damaged gas cap
Low severity
A cap that is off, cross-threaded, or has a torn seal produces a large-leak EVAP code; verify the cap clicks/ratchets fully closed.
Common cause
Parts:gas cap
4
Cracked charcoal canister housing
Medium severity
A structurally cracked canister (vs. just saturated) creates a large, continuous vapor leak; inspect for physical damage or road-debris impact.
Common cause
Parts:charcoal canister
5
Purge or vent valve stuck open
Medium severity
A valve stuck fully open removes the system's seal, producing a large-leak fault; command the valve with a scanner and check for click/response.
Common cause
Parts:purge valve
6
Corroded or holed filler neck / fuel tank vent line
Low severity
Rust-through on the filler neck or a tank vent line creates a large, unmetered leak path; inspect the neck and tank straps for corrosion.
Common cause
Parts:filler neck

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These causes are aggregated from NHTSA owner complaints and general repair knowledge — this is not a diagnosis. P0455 on your car still needs shop confirmation before any repair.

Common symptoms

Check engine light
Fuel smell
Usually no performance issue
Failed emissions readiness

What to check before replacing parts

Check the gas cap first

Look for: A loose, missing, or cross-threaded cap is by far the most common cause of a large EVAP leak code — if it doesn't click to full tightness or the seal is cracked, that's very likely the whole fault.

Inspect visible EVAP hoses

Look for: A large leak is often obvious: a hose disconnected at a fitting, split open, or chewed through (rodent damage is common) rather than a hairline crack.

Command the purge and vent valves with a scan tool

Look for: A valve that doesn't respond at all when commanded open/closed, or stays open when it should seal, prevents the system from holding pressure/vacuum and reads as a large leak.

Smoke-test the system

Look for: With a large leak, expect an obvious plume of smoke or a clearly audible hiss at the fault location — it should be easy to spot compared to a small-leak diagnosis.

Inspect the canister and filler neck

Look for: A cracked charcoal canister housing or a corroded/rusted-through filler neck (common on older vehicles) can leak enough to prevent the system from ever holding vacuum.

Rather have a pro handle it? Find a vetted local mechanic.

Matching symptoms

Check Engine Light