2004 SUBARU FORESTER Service Repair Manual

Page 2233 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-209
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BN:DTC P1110 ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION 
(LOW INPUT)
DTC DETECTING CONDITION:
Immedi

Page 2234 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-210
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BQ:DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT
DTC DETECTING CONDITION:
Two consecutive driving cycles wit

Page 2235 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-211
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK OPERATION OF STARTER MOTOR.Does the starter motor operate 
when ignition switch

Page 2236 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-212
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BR:DTC P1544 EXHAUST GAS TEMPERATURE TOO HIGH
DTC DETECTING CONDITION:
Immediately at fault recognition
T

Page 2237 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-213
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Inspect the rele-
vant DTC

Page 2238 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-214
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BS:DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
DTC DETECTING CONDITION:
Immediately at fault recognitio

Page 2239 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-215
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK INPUT SIGNAL FROM ECM.
1) Turn the ignition switch to OFF.
2) Measure the volta

Page 2240 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4DOTC 2.5)-216
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BT:DTC P2088 OCV SOLENOID VALVE SIGNAL A CIRCUIT OPEN (BANK 1)
DTC DETECTING CONDITION:
Two consecutive d