Possible causes
– Faulty Tumble Generator Position Sensor
– Tumble Generator Position Sensor harness is open or shorted
– Tumble Generator Position Sensor circuit poor electrical connection
– Tumble Generator Position Sensor harness is open or shorted
– Tumble Generator Position Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1093 SUBARU OBD Code Description
Tumble generator valve #2 (LH) malfunction (stuck close)