p0455
Easy Fix
Mitsubishi · Sedans & Cars
Evaporative Emission System Leak Detected (Gross Leak)
Quick Answer
Error code P0455 on your Mitsubishi Sedans & Cars means: Evaporative Emission System Leak Detected (Gross Leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Inspect fuel cap and replace if damaged
2
Check fuel tank for cracks or damage
3
Examine all fuel lines for leaks
4
Inspect vacuum hoses for cracks
5
Test charcoal canister for integrity
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
Fuel cap
Fuel lines
Hose clamps
Charcoal canister
Related Error Codes