P1512 MAZDA Variable Tumble Control Solenoid Stuck Closed

Possible causes

– Variable Tumble Control Solenoid (VTCS) vacuum solenoid stuck closed
– Faulty Variable Tumble Control Solenoid (VTCS)
– Variable Tumble Control Solenoid (VTCS) harness is open or shorted
– Variable Tumble Control Solenoid (VTCS) circuit poor electrical connection

Symptoms

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

P1512 MAZDA OBD Code Description

Variable Tumble Control Solenoid (VTCS) Dual Plane Intake system