Possible causes
– Engine Control Module (ECM) not programed
– ECM program
– Faulty ECM
– Wrong ECM
– ECM program
– Faulty ECM
– Wrong ECM
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0602 SUBARU OBD Code Description
This diagnostic trouble code (DTC) indicates a programming error within the Engine Control Module (ECM).