p0455
Moderate
Jeep · SUVs
Evaporative Emission System Leak Detected (Large)
Quick Answer
Error code P0455 on your Jeep SUVs means: Evaporative Emission System Leak Detected (Large). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Inspect fuel tank cap for cracks or poor seal
2
Check all vapor hoses for disconnection or cracks
3
Inspect charcoal canister for damage
4
Test purge control valve solenoid
5
Smoke test fuel system to locate leaks
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Fuel tank cap
Vapor hoses
Purge control valve
Charcoal canister
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