P0455Mercedes-benz E-classYears: 1996 - 2026
Evaporative Emission Control System Leak Detected (Gross Leak)
Reviewed by ASE Certified Technician
What does this mean?
Code P0455 indicates the PCM has detected a large leak in the EVAP system. A gross leak is typically much easier to find than a small leak.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mercedes-benz E-class models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Loose, damaged, or missing gas cap
Cracked or disconnected EVAP hose
Faulty EVAP purge control valve
Faulty EVAP vent valve/solenoid
Saturated or damaged EVAP charcoal canister
Symptoms to Watch For
- Check Engine Light is illuminated
- Strong fuel odor from vehicle
- Failed emissions test