P0450 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P0450 – Evaporative Emission Control System Pressure Sensor Malfunction


P0450: DIY Repairing Video Tutorial


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P0450 Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P0450 Possible Causes

  Faulty Evaporative Emission System (EVAP) Pressure Sensor,Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted,Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection,Faulty Engine Control Module (ECM)  

P0450 Description

  The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.