P0443 MAZDA Evaporative Emission Control System Purge Control Valve Circuit Malfunction

Possible causes

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

When is the obd code mean?

An improper voltage signal is sent to Engine Control Module (ECM) through the valve.

Symptoms

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

P0443 MAZDA OBD Code Description

The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Engine Control Module (ECM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

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