2004 SUBARU FORESTER sensor

EN(H4DOTC)-40
ENGINE (DIAGNOSTIC)
Inspection Mode
12.Inspection Mode
A: OPERATION
Perform the diagnosis on the “Diagnosis Trouble Codes (DTC) List” below.
Refer to the item of drive cycle when perform the diagnosis not on the “Diagnosis Trouble Codes (DTC) List”
below.
DTC Item On condition
P0011 A Camshaft Position-Timing Over-Advanced or System Performance (Bank 1) —
P0021 A Camshaft Position-Timing Over-Advanced or System Performance (Bank 2) —
P0031 HO2S Sensor Circuit Low Voltage (Bank 1 Sensor 1) —
P0032 HO2S Sensor Circuit High Voltage (Bank 1 Sensor 1) —
P0037 HO2S Sensor Circuit Low Voltage (Bank 1 Sensor 2) —
P0038 HO2S Sensor Circuit High Voltage (Bank 1 Sensor 2) —
P0102 Mass or Volume Air Flow Circuit Low Input —
P0103 Mass or Volume Air Flow Circuit High Input —
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input —
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input —
P0112 Intake Air Temperature Circuit Low Input —
P0113 Manifold Absolute Pressure/Barometric Pressure Circuit High Input —
P0117 Engine Coolant Temperature Circuit Low Input —
P0118 Engine Coolant Temperature Circuit High Input —
P0122 Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input —
P0123 Throttle/Pedal Position Sensor/Switch “A” Circuit High Input —
P0129 Barometric Pressure Too Low —
P0130 O
2 Sensor Circuit (Bank 1 Sensor 1) —
P0131 O
2 Sensor Circuit Low Voltage (Bank 1 Sensor 1) —
P0132 O
2 Sensor Circuit High Voltage (Bank 1 Sensor 1) —
P0134 O
2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) —
P0137 O
2 Sensor Circuit Low Voltage (Bank 1 Sensor 2) —
P0138 O
2 Sensor Circuit High Voltage (Bank 1 Sensor 2) —
P0171 System Too Lean (Bank 1) —
P0172 System Too Rich (Bank 1) —
P0230 Fuel Pump Primary Circuit —
P0245 Turbo/Super Charger Wastegate Solenoid “A” Low —
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) —
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor) —
P0335 Crankshaft Position Sensor “A” Circuit —
P0336 Crankshaft Position Sensor “A” Circuit Range/Performance —
P0340 Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor) —
P0341Camshaft Position Sensor “A” Circuit Range/Performance (Bank 1 or Single
Sensor)—
P0365 Camshaft Position Sensor “B” Circuit (Bank 1) —
P0390 Camshaft Position Sensor “B” Circuit (Bank 2) —
P0458 Evaporative Emission Control System Purge Control Valve Circuit Low —
P0462 Fuel Level Sensor Circuit Low Input —
P0463 Fuel Level Sensor Circuit High Input —
P0502 Vehicle Speed Sensor Circuit Low Input —
P0503 Vehicle Speed Sensor Intermittent/Erratic/High —
P0509 Idle Control System Circuit High —
P0512 Starter Request Circuit—
P0513 Incorrect Immobilizer Key —
P0519 Idle Control System Malfunction (Fail-Safe) —

EN(H4DOTC)-41
ENGINE (DIAGNOSTIC)
Inspection Mode
P0545 Exhaust Gas Temperature Sensor Circuit Low - Bank 1 —
P0558 Generator Circuit Low Input —
P0559 Generator Circuit High Input —
P0565 Cruise Control On Signal —
P0600 Serial Communication Link —
P0604 Internal Control Module Random Access Memory (RAM) Error —
P0691 Cooling Fan 1 Control Circuit Low —
P0692 Cooling Fan 1 Control Circuit High —
P0700 Transmission Control System (MIL Request) —
P0851 Neutral Switch Input Circuit Low —
P0852 Neutral Switch Input Circuit High —
P1086 Tumble Generated Valve Position Sensor 2 Circuit Low —
P1087 Tumble Generated Valve Position Sensor 2 Circuit High —
P1088 Tumble Generated Valve Position Sensor 1 Circuit Low —
P1089 Tumble Generated Valve Position Sensor 1 Circuit High —
P1091 Tumble Generated Valve System 1 (Valve Close) —
P1093 Tumble Generated Valve System 2 (Valve Close) —
P1094 Tumble Generated Valve Signal 1 Circuit Malfunction (Open) —
P1095 Tumble Generated Valve Signal 1 Circuit Malfunction (Short) —
P1096 Tumble Generated Valve Signal 2 Circuit Malfunction (Open) —
P1097 Tumble Generated Valve Signal 2 Circuit Malfunction (Short) —
P1110 Atmospheric Pressure Sensor Circuit Malfunction (Low Input) —
P1111 Atmospheric Pressure Sensor Circuit Malfunction (High Input) —
P1152 O
2 Sensor Circuit Range/Performance (Low) (Bank 1 Sensor 1) —
P1153 O
2 Sensor Circuit Range/Performance (High) (Bank 1 Sensor 1) —
P1306 OCV Solenoid Valve Signal 1 Circuit Malfunction (Open) —
P1307 OCV Solenoid Valve Signal 1 Circuit Malfunction (Short) —
P1308 OCV Solenoid Valve Signal 2 Circuit Malfunction (Open) —
P1309 OCV Solenoid Valve Signal 2 Circuit Malfunction (Short) —
P1518 Starter Switch Circuit Low Input —
P1544 Exhaust Gas Temperature Too High —
P1560 Back-Up Voltage Circuit Malfunction —
P1570 ANTENNA—
P1571 Reference Code Incompatibility —
P1572 IMM Circuit Failure (Except Antenna Circuit) —
P1574 Key Communication Failure —
P1576 EGI Control Module EEPROM —
P1577 IMM Control Module EEPROM —DTC Item On condition

EN(H4DOTC)-45
ENGINE (DIAGNOSTIC)
Drive Cycle
13.Drive Cycle
A: OPERATION
There are three driving patterns on diagnosis.Following trouble can be diagnosed with driving specified pat-
terns.After repair the following trouble, be sure to check that the trouble is cleared correctly by the driving
specified patterns.
1. PREPARATION FOR DRIVE CYCLE
1) Check battery voltage is more than 12 V and fuel remains half [20 — 402 (5.3 — 10.6 US gal, 4.4 — 8.8
Imp gal)].
2) After performing the diagnostics and clearing the memory, check for any remaining unresolved trouble da-
ta.
3) Separate the test mode connector.
NOTE:
 Be sure to perform the diagnosis after idling from starting the cooled engine except when the engine cool-
ant temperature is specified.
 Perform the diagnosis twice when the DTC is marked * and after the completion of first diagnosis, stop the
engine and perform the second diagnosis in the same condition.
2. DRIVE THE VEHICLE 20 MINUTES AT THE SPEED OF 80 KM/H (50 MPH), AND THEN IDLE
THE ENGINE 1 MINUTE.
3. 10 MINUTES IDLING
NOTE:
Drive the vehicle more than 10 km/h (6 MPH) before diagnosis.
DTC Item On condition
*P0125 Insufficient Coolant Temperature For Closed Loop Fuel ControlEngine coolant temperature at
start is less than 20°C (68°F)
*P0133O
2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
—
*P0420 Catalyst System Efficiency Below Threshold (Bank 1) —
P0459 Evaporative Emission Control System Purge Control Valve Circuit High —
P0461 Fuel Level Sensor Circuit Range/Performance —
P0546 Exhaust Gas Temperature Sensor Circuit High - Bank 1 —
P1312 Exhaust Gas Temperature Sensor MalfunctionEngine coolant temperature at
start is less than 30°C (86°F)
DTC Item On condition
P0111 Intake Air Temperature Circuit Range/Performance —
P0464 Fuel Level Sensor Circuit Intermittent —
P0508 Idle Control System Circuit Low —
*P0483 Cooling Fan Rationality Check —
*P0506 Idle Control System RPM Lower Than Expected —
*P0507 Idle Control System RPM Higher Than Expected —

EN(H4DOTC)-46
ENGINE (DIAGNOSTIC)
Drive Cycle
4. DRIVE THE VEHICLE WITH FOLLOWING DRIVE PATTERNS
(A) Run the engine at idle for more
than 10 seconds.(D) Slowdown the vehicle to 64 km/h
(40 MPH) with throttle fully closed
condition.(F) Accelerate the vehicle to 97 km/h
(60 MPH) within 10 seconds.
(B) Accelerate the vehicle to 97 km/h
(60 MPH) within 20 seconds.(G) Stop the vehicle with throttle fully
closed condition. (E) Drive the vehicle at 64 km/h (40
MPH) for 20 seconds.
(C) Drive the vehicle at 97 km/h (60
MPH) for 20 seconds.(H) Vehicle speed km/h (MPH)
(I) (Sec.)
DTC Item On condition
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1) —
P0068 Manifold Pressure Sensor Range/Performance —
P0246 Turbo/Super Charger Wastegate Solenoid “A” High —
P1090 Tumble Generated Valve System 1 (Valve Open)Engine coolant temperature at
start is −5 — 5°C (−41 — 41°F)
P1092 Tumble Generated Valve System 2 (Valve Open)Engine coolant temperature at
start is −5 — 5°C (−41 — 41°F)
*P0121 Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance —
*P0139O
2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
—
*P0301 Cylinder 1 Misfire DetectedDiagnosis may be completed at
once
*P0302 Cylinder 2 Misfire DetectedDiagnosis may be completed at
once
*P0303 Cylinder 3 Misfire DetectedDiagnosis may be completed at
once
*P0304 Cylinder 4 Misfire DetectedDiagnosis may be completed at
once
*P0101 Mass or Volume Air Flow Circuit Range/Performance —
P0244 Turbo/Super Charger Wastegate Solenoid “A” Range/Performance —
P1301 Misfire Detected (High Temperature Exhaust Gas) —
EN-00842
(C) (H)
(I) (60)
97
64(40)
(B)
(A)(F) (D)
(E)
150 100 50 0(G)

EN(H4DOTC)-62
ENGINE (DIAGNOSTIC)
Diagnostics for Engine Starting Failure
C: CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MOD-
ULE (ECM)
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode ERATION, Clear Memory Mode.> and Inspection Mode .
WIRING DIAGRAM:
LHD model
EN-02312
F74
B72
34
12
BATTERYIGNITION
SWITCH MAIN RELAY
SBF-4SBF-1
SBF-5
B72 TO FRONT OXYGEN (A/F) SENSOR
D16 D7
B12
A6
A7
B4
B1
D1
D2
A34B5
D6
B19
D14
No.11
B61F44
B47
B100
F2
E3 F60 1 2 3 5 6 4
ECM
EE
14
B134
B137 B135 A :
B :
C :B136
D :
14
7
3412
56
123
4
56
78
9
1011 12
1314 15 16
F60B47
B137
F2
B100F2
11
10
20
8
9 13
14
3
15
16
B135
F44
567
82 1
94 310
24 22 23 2511 12 13 14 15
26 27
2816 17 18 19
20 21
29 30 31 32 33 34 35
12345678
34
12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 2456 71234 5678910 11 12 13 14 15 16 17 18 19 20
567
82 1
94 310
22 23 11 12 13 14 15
24 25
2616 17
18 19 20 21
27 28 29 30 31
F74 B200
MT
MT
B134
56 7
82 1
94 310
24 22 23 25 11 12 13 14 15
26 27
2816 17
18 19 20 21
33 34 29
32 30 31
B136
56
782 1
94 310
24 22 23 2511 12 13
1415
26 27
2816
17 18 19 20 21
33 34 29
32 30
31 35

EN(H4DOTC)-74
ENGINE (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
18.List of Diagnostic Trouble Code (DTC)
A: LIST
DTC Item NOTE
P0011 A Camshaft Position-Timing Over-
Advanced or System Performance
(Bank 1) OVER - ADVANCED OR SYSTEM PERFORMANCE (BANK 1), Diagnostic
Procedure with Diagnostic Trouble Code (DTC).>
P0021 A Camshaft Position-Timing Over-
Advanced or System Performance
(Bank 2) OVER - ADVANCED OR SYSTEM PERFORMANCE (BANK 2), Diagnostic
Procedure with Diagnostic Trouble Code (DTC).>
P0030 HO2S Heater Control Circuit (Bank
1 Sensor 1) LOW (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0031 HO2S Sensor Circuit Low Voltage
(Bank 1 Sensor 1) LOW (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0032 HO2S Sensor Circuit High Voltage
(Bank 1 Sensor 1) HIGH (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0037 HO2S Sensor Circuit Low Voltage
(Bank 1 Sensor 2) LOW (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0038 HO2S Sensor Circuit High Voltage
(Bank 1 Sensor 2) HIGH (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0068 Manifold Pressure Sensor Range/
Performance RANGE/PERFORMANCE, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0101 Mass or Volume Air Flow Circuit
Range/Performance CUIT RANGE/PERFORMANCE, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>
P0102 Mass or Volume Air Flow Circuit
Low Input CUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0103 Mass or Volume Air Flow Circuit
High Input CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0107 Manifold Absolute Pressure/Baro-
metric Pressure Circuit Low Input SURE/BAROMETRIC PRESSURE CIRCUIT LOW INPUT, Diagnostic Pro-
cedure with Diagnostic Trouble Code (DTC).>
P0108 Manifold Absolute Pressure/Baro-
metric Pressure Circuit High Input CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0111 Intake Air Temperature Circuit
Range/Performance CUIT RANGE/PERFORMANCE, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>
P0112 Intake Air Temperature Circuit Low
Input CUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0113 Manifold Absolute Pressure/Baro-
metric Pressure Circuit High Input CUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0117 Engine Coolant Temperature Cir-
cuit Low Input TURE CIRCUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0118 Engine Coolant Temperature Cir-
cuit High Input TURE CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>

EN(H4DOTC)-75
ENGINE (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
P0121 Throttle/Pedal Position Sensor/
Switch “A” Circuit Range/Perfor-
mance SENSOR/SWITCH “A” CIRCUIT RANGE/PERFORMANCE, Diagnostic Pro-
cedure with Diagnostic Trouble Code (DTC).>
P0122 Throttle/Pedal Position Sensor/
Switch “A” Circuit Low Input SENSOR/SWITCH “A” CIRCUIT LOW INPUT, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0123 Throttle/Pedal Position Sensor/
Switch “A” Circuit High Input SENSOR/SWITCH “A” CIRCUIT HIGH INPUT, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0125 Insufficient Coolant Temperature
For Closed Loop Fuel Control PERATURE FOR CLOSED LOOP FUEL CONTROL, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
P0129 Barometric Pressure Too Low LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0131 O
2 Sensor Circuit Low Voltage
(Bank 1 Sensor 1) AGE (BANK 1 SENSOR1), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0132 O
2 Sensor Circuit High Voltage
(Bank 1 Sensor 1) VOLTAGE (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0133 O
2 Sensor Circuit Slow Response
(Bank 1 Sensor 1) RESPONSE (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0134 O
2 Sensor Circuit No Activity
Detected (Bank 1 Sensor 1) ITY DETECTED (BANK 1 SENSOR 1), Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
P0137 O
2 Sensor Circuit Low Voltage
(Bank 1 Sensor 2) AGE (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0138 O
2 Sensor Circuit High Voltage
(Bank 1 Sensor 2) VOLTAGE (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0139 O
2 Sensor Circuit Slow Response
(Bank 1 Sensor 2) RESPONSE (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0171 System Too Lean (Bank 1) Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0172 System Too Rich (Bank 1) Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0230 Fuel Pump Primary Circuit Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0244 Turbo/Super Charger Wastegate
Solenoid “A” Range/Performance WASTEGATE SOLENOID “A” RANGE/PERFORMANCE, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
P0245 Turbo/Super Charger Wastegate
Solenoid “A” Low WASTEGATE SOLENOID “A” LOW, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0246 Turbo/Super Charger Wastegate
Solenoid “A” High WASTEGATE SOLENOID “A” HIGH, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0301 Cylinder 1 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0302 Cylinder 2 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0303 Cylinder 3 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).> DTC Item NOTE

EN(H4DOTC)-76
ENGINE (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
P0304 Cylinder 4 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0327 Knock Sensor 1 Circuit Low Input
(Bank 1 or Single Sensor) INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
P0328 Knock Sensor 1 Circuit High Input
(Bank 1 or Single Sensor) INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
P0335 Crankshaft Position Sensor “A” Cir-
cuit SOR “A” CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0336 Crankshaft Position Sensor “A” Cir-
cuit Range/Performance SOR “A” CIRCUIT RANGE/PERFORMANCE, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0340 Camshaft Position Sensor “A” Cir-
cuit (Bank 1 or Single Sensor) “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0341 Camshaft Position Sensor “A” Cir-
cuit Range/Performance (Bank 1 or
Single Sensor) “A” CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR),
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0365 Camshaft Position Sensor “B” Cir-
cuit (Bank 1) “B” CIRCUIT (BANK 1), Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0390 Camshaft Position Sensor “B” Cir-
cuit (Bank 2) “B” CIRCUIT (BANK 2), Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0420 Catalyst System Efficiency Below
Threshold (Bank 1) BELOW THRESHOLD (BANK 1), Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
P0458 Evaporative Emission Control Sys-
tem Purge Control Valve Circuit
Low TROL SYSTEM PURGE CONTROL VALVE CIRCUIT LOW, Diagnostic Pro-
cedure with Diagnostic Trouble Code (DTC).>
P0459 Evaporative Emission Control Sys-
tem Purge Control Valve Circuit
High TROL SYSTEM PURGE CONTROL VALVE CIRCUIT HIGH, Diagnostic
Procedure with Diagnostic Trouble Code (DTC).>
P0461 Fuel Level Sensor Circuit Range/
Performance RANGE/PERFORMANCE, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0462 Fuel Level Sensor Circuit Low
Input LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0463 Fuel Level Sensor Circuit High
Input HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0464 Fuel Level Sensor Circuit Intermit-
tent INTERMITTENT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0483 Cooling Fan Rationality Check CHECK, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0502 Vehicle Speed Sensor Circuit Low
Input CUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0503 Vehicle Speed Sensor Intermittent/
Erratic/High CUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0506 Idle Control System RPM Lower
Than Expected LOWER THAN EXPECTED, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).> DTC Item NOTE