Mercedes Benz

P0455 Major leak in purge system / Hose in system not connected or filler cap open (P0455) Possible cause: ­ Purge control system has leak (function chain) Affected functions: ­ Fuel system ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ Test 1: Fuel tank leak test ( Valid for (USA) ) 1. Fuel tank leak test ( Valid for (USA) ) Warning!Communication with ECU required.