p0455
Moderate
Citroen · Sedans & Hatchbacks
Evaporative Emission System Leak Detected (large leak)
Quick Answer
Error code P0455 on your Citroen Sedans & Hatchbacks means: Evaporative Emission System Leak Detected (large leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check fuel cap for cracks or loose seal
2
Tighten or replace fuel cap
3
Inspect all EVAP hoses for cracks
4
Test purge control valve operation
5
Inspect charcoal canister for damage
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 cap
EVAP hose
Purge valve
Charcoal canister
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