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p0455
Easy Fix
Mercedes-Benz · Sedans
Evaporative Emission Control System Leak Detected (Large Leak)
Quick Answer
Error code P0455 on your Mercedes-Benz Sedans means: Evaporative Emission Control System Leak Detected (Large Leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
W177W206W214V297A220 2024A220 4MATIC 2024AMG A35 4MATIC 2024AMG C43 4MATIC 2024AMG C63 S 2024AMG E53 4MATIC+ 2024AMG E63 S 2024AMG EQS 53 2024AMG S63 E 2024C300 2024C300 4MATIC 2024E350 4MATIC 2024E450 4MATIC 2024EQS 450+ 2024EQS 580 4MATIC 2024Maybach S580 2024S500 4MATIC 2024S580 4MATIC 2024W223
Likely Causes
  1. Loose or missing fuel cap
  2. Cracked or disconnected EVAP hoses
  3. Faulty purge control valve stuck open
  4. Damaged charcoal canister
  5. Leaking fuel tank seal or filler neck
How to Fix It
1
Inspect the fuel cap for damage and ensure it clicks when tightened
2
Perform a smoke test on the EVAP system to locate the leak source
3
Inspect all EVAP hoses and connections for cracks or loose fittings
4
Test the purge control valve for proper operation using a scan tool
5
Check the charcoal canister for cracks or saturation
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
EVAP hoses
Purge control valve
Charcoal canister
Related Error Codes
P0171P0174P0300P0410P0420
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