p0455
Easy Fix
Toyota · SUVs
EVAP System Large Leak Detected
Quick Answer
Error code P0455 on your Toyota SUVs means: EVAP System Large Leak Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
4Runner TRD Pro 2024Grand Highlander Limited 2024Highlander XLE 2024Highlander Hybrid Bronze Edition 2023Land Cruiser 1958 Edition 2024RAV4 XLE Premium 2024RAV4 Hybrid SE 2024Sequoia Capstone 20244Runner Limited 20244Runner SR5 20244Runner TRD Off-Road 2024Grand Highlander Platinum 2024Grand Highlander XLE 2024Highlander LE 2024Highlander Limited 2024Highlander Platinum 2024RAV4 Adventure 2024RAV4 LE 2024RAV4 TRD Off-Road 2024RAV4 XLE 2024Sequoia Limited 2024Sequoia Platinum 2024Sequoia SR5 2024Sequoia TRD Pro 2024Venza Limited 2024
Likely Causes
How to Fix It
1
Inspect the gas cap for cracks, damaged seal, or improper seating; replace if worn
2
Perform a smoke test on the entire EVAP system to visually locate the large leak
3
Inspect EVAP hoses and connections from the fuel tank to the engine compartment
4
Check the charcoal canister body for visible cracks
5
Inspect the fuel filler neck for corrosion or cracks, especially on older models
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Gas cap
EVAP hoses
Charcoal canister
Fuel filler neck
Related Error Codes