get it in eBay ,,Mercedes w208 CLK 320 clk430 Fuel vapor recovery Valve,, its 73.90$+shiping8.10$ need to replaces Wat i found and that's what I'm gonna do this weekend.
evaporative emission control system incorrect puge flow
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input Trouble code P0453 means: Evaporative Emission System Pressure Sensor/Switch High Input
Trouble code P0454 means: Evaporative Emission System Pressure Sensor/Switch Intermittent
Evaporative Emission System Switching Valve Control Circuit/Open This is referring to a problem with the evaporative emission system. A technician should be able to determine exactly what part of the system is malfunctioning.
Trouble code P0453 means: Evaporative Emission System Pressure Sensor/Switch High Input
Trouble code P0452 means: Evaporative Emission System Pressure Sensor/Switch Low Input
dtccode.com : Evaporative Emission Control System Pressure Sensor High Input
Trouble code P0453 means: Evaporative Emission System Pressure Sensor/Switch High Input
dtccode.com : Evaporative Emission Control System Pressure Sensor High Input
Trouble code P0451 means: Evaporative Emission System Pressure Sensor/Switch Range/Performance
PO452 is the name of the error code you are receiving. The evaporative emission pressure sensor mount plug could be disconnected so that should solve the problem.
This ODB code could indicate a problem with any part of the evaporative emission control system: gas cap, rubber hoses, canister, or purge solenoid.