2004 SUBARU FORESTER Service Repair Manual

Page 1281 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-183
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 using

Page 1282 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-184
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AV:DTC P0502 VEHICLE SPEED SENSOR CIRCUIT LOW INPUT
NOTE:
For the diagnostic procedure, refer to DTC P0503. <Re

Page 1283 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-185
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AW:DTC P0503 VEHICLE SPEED SENSOR CIRCUIT HIGH INPUT
DTC DETECTING CONDITION:
Immediately at fault recognition

Page 1284 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-186
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK TRANSMISSION TYPE.Is the transmission type AT? Go to step 2.Go to step 3.
2 CHECK DTC

Page 1285 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-187
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AX:DTC P0506 IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED
DTC DETECTING CONDITION:
Two consecutive driving cycle

Page 1286 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-188
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 DTC 
using “List o

Page 1287 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-189
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AY:DTC P0507 IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED 
DTC DETECTING CONDITION:
Two consecutive driving cyc

Page 1288 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-190
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 DTC 
using “List o