2017 Nissan P0455: What It Means & Is It Safe to Drive?
P0455 on the 2017 Nissan: Evaporative Emission System Leak Detected (Large Leak). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
PowertrainMedium urgency
What this code means
A large leak has been detected in the EVAP system. Could be gas cap left off, disconnected hose, or damaged canister.
Common causes on the 2017 Nissan
- Gas cap missing or not sealed
- Disconnected or ruptured EVAP hose
- Damaged charcoal canister
- Faulty purge/vent solenoid
Symptoms
- Check Engine Light
- Fuel smell possible
Typical fixes
- Install or replace gas cap
- Inspect and repair EVAP hoses
- Replace canister or valves as needed
Repair cost range
For a 2017 Nissan, repairs for P0455 typically fall between $20 and $500, depending on the root cause and labor rates in your area.
Known issues on Nissan
Nissan P0455 is most often a gas cap failure or a large crack in the EVAP canister hose. On Frontier and Pathfinder, the EVAP canister can crack from road debris—physically inspect it before using a smoke machine.
Most commonly affected models
Altima 2002–2012Sentra 2007–2012Frontier 2001–2012