Possible causes

– Faulty Evaporative Emission (EVAP) Purge Control Solenoid Valve (PCSV)
– Purge Control Solenoid Valve harness is open or shorted
– Purge Control Solenoid Valve circuit poor electrical connection

When is the code detected?

An excessively low voltage signal is sent to Engine Control Module (ECM) through the valve

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0444 HYUNDAI Description

The evaporative emission control system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Engine Control Module (ECM) controls the Purge Control Solenoid Valve (PCSV) to purge any collected vapors from the canister back to the engine for combustion. This valve is actuated by the purge control signal from the ECM and controls fuel vapor from the canister to the intake manifold.