P2004 MAZDA Variable Tumble Shutter Valve Stuck Open

Possible causes

– Faulty VTC Shutter valve actuator (Stuck open)
– Missconnecting or pull out the vacuum hose
– Faulty Variable tumble solenoid valve
– Variable tumble solenoid valve harness is open or shorted
– Variable tumble solenoid valve circuit poor electrical connection

Symptoms

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

P2004 MAZDA OBD Code Description