Subaru Legacy IV (2008 year). Manual - part 641

GD(H6DO)-184

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EB:DTC P2088 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

LOW (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of the oil flow control solenoid valve.
Judge as NG when the current is small even though the duty signal is large.

2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD

• Abnormality Judgement

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 2000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement

Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.

Time Needed for Diagnosis: 2000 ms

Secondary Parameters

Enable Conditions

None

 

Judgement Value

Malfunction criteria

Threshold value

Battery voltage

t 10.9 V

Oil flow control solenoid valve control 
duty

t 99.61 %

Oil control solenoid valve control present 
current

< 0.306 A

Judgement Value

Malfunction criteria

Threshold value

Battery voltage

t 10.9 V

Target current value of the oil flow control 
solenoid valve

t 0.14 A

|Target current value of the oil flow con-
trol solenoid valve – Oil flow control sole-
noid valve control current value|

< 0.08 A

GD(H6DO)-185

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EC:DTC P2089 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

HIGH (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of oil flow control solenoid valve.
Judge as NG when the current is large even though the duty signal is small.

2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD

• Abnormality Judgement

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 2000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement

Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.

Time Needed for Diagnosis: 2000 ms

Secondary Parameters

Enable Conditions

None

 

Judgement Value

Malfunction criteria

Threshold value

Battery voltage

t 10.9 V

Oil flow control solenoid valve control 
duty

< 0.39 %

Oil control solenoid valve control present 
current

t 0.306 A

Judgement Value

Malfunction criteria

Threshold value

Battery voltage

t 10.9 V

|Target current value of the oil flow con-
trol solenoid valve – Oil flow control sole-
noid valve control current value|

< 0.08 A

GD(H6DO)-186

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

ED:DTC P2092 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

LOW (BANK 2)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P2088. <Ref. to GD(H6DO)-184, DTC P2088 INTAKE CAMSHAFT
POSITION ACTUATOR CONTROL CIRCUIT LOW (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>

EE:DTC P2093 INTAKE CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT 

HIGH (BANK 2)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P2089. <Ref. to GD(H6DO)-185, DTC P2089 INTAKE CAMSHAFT
POSITION ACTUATOR CONTROL CIRCUIT HIGH (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>

GD(H6DO)-187

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EF:DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect the malfunction of fuel system from the size of the sub feedback learning value.
Control the sub feedback learning and judge as NG when the learning value is in the lean zone.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously when the vehicle is idling or running at a constant speed of 80 km/h (50
MPH) or more.

(A)

Electromotive force

(C)

Rich

(E)

Theoretical air fuel ratio

(B)

Air fuel ratio

(D)

Lean

(F)

Comparative voltage

(1)

Atmosphere

(2)

Exhaust gas

(3)

Electromotive force

Secondary Parameters

Enable Conditions

Conditions for carrying out the sub feed-
back learning

Completed

Continuous time when all conditions are 
established.

t 1 s

EN-01696

(3)

V

(1)

(2)

(2)

(E)

(F)

(C)

(B)

(D)

(A)