Subaru Forester 2004 Service Manual page 12

(1)
(2)
(3)
(1) Front oxygen (A/F) sensor
(2) Precatalytic converter
Electrical Component Location
(4)
(3) Exhaust gas temperature sensor
(4) Front catalytic converter
EN(H4DOTC 2.5)-11
(5)
(6)
(5) Rear oxygen sensor
(6) Rear catalytic converter
ENGINE (DIAGNOSTIC)
EN-02351