Subaru Legacy (2005 year). Manual - part 480

EN(H6DO)(diag)-233

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

CR:DTC P2089 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

HIGH (BANK 1)

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-41, 
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-34, PROCEDURE, 
Inspection Mode.>.
WIRING DIAGRAM:

EN-02514

B21

E2

B134

E67

28

2

1

24

23

E67

B21

1 2

18

B134

5

6

7

8

2

1

9

4

3

10

24

22 23

25

11 12 13 14 15

26 27

28

16 17

18 19 20 21

33 34

29

32

30 31

ECM

OIL FLOW CONTROL 

SOLENOID VALVE RH

1 2 3 4

12 13 14 15

5 6 7 8

16 17 18 19

9 10 11

20 21 22

23 24 25 26 27 28 29 30 31 32 33

35

34

37

36

39

38

41

40

43

42

44

45

47

46

49

48

51

50

53

52

54

EN(H6DO)(diag)-234

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND OIL 
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and 
oil flow control solenoid valve.
3) Measure the resistance between oil flow 
control solenoid valve and engine ground.

Connector & terminal

(E67) No. 1 — Engine ground:
(E67) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 2.

Repair the short 
circuit between 
ECM and oil flow 
control solenoid 
valve connector.

2

CHECK OIL FLOW CONTROL SOLENOID 
VALVE.
1) Remove the oil flow control solenoid valve 
connector.
2) Measure the resistance between oil flow 
control solenoid valve terminals.

Terminal

No. 1 — No. 2:

Is the resistance 6 — 12 

Ω?

Repair the poor 
contact in ECM 
and oil flow con-
trol solenoid valve.

Replace the oil 
flow control sole-
noid valve. <Ref. 
to ME(H6DO)-79, 
Oil Flow Control 
Solenoid Valve.>

EN(H6DO)(diag)-235

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

CS:DTC P2092 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

LOW (BANK 2)

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-41, 
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-34, PROCEDURE, 
Inspection Mode.>.
WIRING DIAGRAM:

EN-02515

B21

E2

B134

E68

29

2

1

28

27

E68

B21

1 2

19

B134

5

6

7

8

2

1

9

4

3

10

24

22 23

25

11 12 13 14 15

26 27

28

16 17

18 19 20 21

33 34

29

32

30 31

ECM

1 2 3 4

12 13 14 15

5 6 7 8

16 17 18 19

9 10 11

20 21 22

23 24 25 26 27 28 29 30 31 32 33

35

34

37

36

39

38

41

40

43

42

44

45

47

46

49

48

51

50

53

52

54

OIL FLOW CONTROL 
SOLENOID VALVE LH

EN(H6DO)(diag)-236

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND OIL 
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and 
oil flow control solenoid valve.
3) Measure the resistance between ECM and 
oil flow control solenoid valve.

Connector & terminal

(B134) No. 19 — (E68) No. 1:
(B134) No. 29 — (E68) No. 2:

Is the resistance less than 1 
Ω?

Go to step 2.

Repair the open 
circuit of harness 
between ECM and 
oil flow control 
solenoid valve 
connector.

NOTE:
In this case, repair
the following:
• Open circuit of 
harness between 
ECM and oil flow 
control solenoid 
valve connector
• Poor contact in 
coupling connector

2

CHECK OIL FLOW CONTROL SOLENOID 
VALVE.
1) Remove the oil flow control solenoid valve 
connector.
2) Measure the resistance between oil flow 
control solenoid valve terminals.

Terminal

No. 1 — No. 2:

Is the resistance 6 — 12 

Ω?

Repair the poor 
contact in ECM 
and oil flow con-
trol solenoid valve.

Replace the oil 
flow control sole-
noid valve. <Ref. 
to ME(H6DO)-79, 
Oil Flow Control 
Solenoid Valve.>