2009 SUBARU TRIBECA p0304

EN(H6DO)(diag)-41
Drive Cycle
ENGINE (DIAGNOSTICS)
2. DRIVE CYCLE A — DRIVE THE VEHICLE WITH 80 KM/H (50 MPH) FOR 20 MINUTES, AND
THEN IDLE THE ENGINE FOR A MINUTE.
DTC Item On condition
*P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control
Engine coolant temperature at
engine start is 20°C (68°F) or
less.
*P0128Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Tem-
perature)—
*P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) —
*P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1) —
*P0171 System Too Lean (Bank 1)Complete diagnosis for drive
cycle B or C
*P0172 System Too Rich (Bank 1)Complete diagnosis for drive
cycle B or C
*P0174 System Too Lean (Bank 2)Complete diagnosis for drive
cycle B or C
*P0175 System Too Rich (Bank 2)Complete diagnosis for drive
cycle B or C
*P0196 Engine Oil Temperature Sensor Circuit Range/performance —
*P0301 Cylinder 1 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0302 Cylinder 2 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0303 Cylinder 3 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0304 Cylinder 4 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0305 Cylinder 5 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0306 Cylinder 6 Misfire DetectedComplete diagnosis for drive
cycle B or C
*P0420 Catalyst System Efficiency Below Threshold (Bank 1) —
*P0442 Evaporative Emission Control System Leak Detected (Small Leak)
Engine coolant temperature at
engine start is 25°C (77°F) or
less.
*P0451 Evaporative Emission Control System Pressure Sensor —
*P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
Engine coolant temperature at
engine start is 25°C (77°F) or
less.
*P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/ Off)
Engine coolant temperature at
engine start is 25°C (77°F) or
less.
*P0464 Fuel Level Sensor Circuit Intermittent —
P1443 Vent Control Solenoid Valve Function Problem —
*P2096 Post Catalyst Fuel Trim System Too Lean (Bank 1)Complete diagnosis for drive
cycle B or C
*P2097 Post Catalyst Fuel Trim System Too Rich (Bank 1)Complete diagnosis for drive
cycle B or C
*P2098 Post Catalyst Fuel Trim System Too Lean (Bank 2)Complete diagnosis for drive
cycle B or C
*P2099 Post Catalyst Fuel Trim System Too Rich (Bank 2)Complete diagnosis for drive
cycle B or C
P2103 Throttle Actuator Control Motor Circuit HighComplete diagnosis for drive
cycle B or C

EN(H6DO)(diag)-42
Drive Cycle
ENGINE (DIAGNOSTICS)
3. DRIVE CYCLE B — 10 MINUTES IDLING
NOTE:
Drive the vehicle in more than 10 km/h (6 MPH) before diagnosis.
DTC Item On condition
*P0126 Insufficient Coolant Temperature for Stable Operation —
*P0171 System Too Lean (Bank 1)Complete diagnosis for drive
cycle A or C
*P0172 System Too Rich (Bank 1)Complete diagnosis for drive
cycle A or C
*P0174 System Too Lean (Bank 2)Complete diagnosis for drive
cycle A or C
*P0175 System Too Rich (Bank 2)Complete diagnosis for drive
cycle A or C
*P0301 Cylinder 1 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0302 Cylinder 2 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0303 Cylinder 3 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0304 Cylinder 4 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0305 Cylinder 5 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0306 Cylinder 6 Misfire DetectedComplete diagnosis for drive
cycle A or C
*P0459 Evaporative Emission Control System Purge Control Valve Circuit High —
*P0483 Cooling Fan Rationality Check —
*P0506 Idle Control System RPM Lower Than Expected —
*P0507 Idle Control System RPM Higher Than Expected —
*P2096 Post Catalyst Fuel Trim System Too Lean (Bank 1)Complete diagnosis for drive
cycle A or C
*P2097 Post Catalyst Fuel Trim System Too Rich (Bank 1)Complete diagnosis for drive
cycle A or C
*P2098 Post Catalyst Fuel Trim System Too Lean (Bank 2)Complete diagnosis for drive
cycle A or C
*P2099 Post Catalyst Fuel Trim System Too Rich (Bank 2)Complete diagnosis for drive
cycle A or C
P2103 Throttle Actuator Control Motor Circuit HighComplete diagnosis for drive
cycle A or C

EN(H6DO)(diag)-43
Drive Cycle
ENGINE (DIAGNOSTICS)
4. DRIVE CYCLE C — DRIVE THE VEHICLE WITH FOLLOWING DRIVE PATTERNS
(A) Idle the engine for more than 10
seconds.
(D) Decelerate the vehicle to 64 km/h
(40 MPH) with throttle fully closed.
(G) Stop the vehicle with throttle fully
closed.
(B) Accelerate the vehicle to 97 km/h
(60 MPH) within 20 seconds.
(E) Drive the vehicle at 64 km/h (40
MPH) for 20 seconds.
(H) Vehicle speed km/h (MPH)
(I) Sec.
(C) Drive the vehicle at 97 km/h (60
MPH) for 20 seconds.
(F) Accelerate the vehicle to 97 km/h
(60 MPH) within 10 seconds.

DTC Item On condition
P0026 Intake Valve Control Solenoid Circuit Range/Performance (Bank 1) —
P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2) —
*P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1) —
*P0050 HO2S Heater Control Circuit (Bank 2 Sensor 1) —
*P0068 MAP/MAF - Throttle Position Correlation —
P0076 Intake Valve Control Circuit Low (Bank 1) —
P0082 Intake Valve Control Circuit Low (Bank 2) —
*P0101 Mass or Volume Air Flow Circuit Range/Performance —
P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) —
*P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) —
P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) —
*P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2) —
*P0171 System Too Lean (Bank 1) Complete diagnosis for drive cycle A or B
*P0172 System Too Rich (Bank 1) Complete diagnosis for drive cycle A or B
*P0174 System Too Lean (Bank 2) Complete diagnosis for drive cycle A or B
*P0175 System Too Rich (Bank 2) Complete diagnosis for drive cycle A or B
*P0301 Cylinder 1 Misfire Detected Complete diagnosis for drive cycle A or B
*P0302 Cylinder 2 Misfire Detected Complete diagnosis for drive cycle A or B
*P0303 Cylinder 3 Misfire Detected Complete diagnosis for drive cycle A or B
*P0304 Cylinder 4 Misfire Detected Complete diagnosis for drive cycle A or B
*P0305 Cylinder 5 Misfire Detected Complete diagnosis for drive cycle A or B
*P0306 Cylinder 6 Misfire Detected Complete diagnosis for drive cycle A or B
P2103 Throttle Actuator Control Motor Circuit High Complete diagnosis for drive cycle A or B
EN-00842
(C)
(H)
(I)
(60)97
64(40)(B)
(A)
(F)(D)
(E)
150100500
(G)

EN(H6DO)(diag)-72
List of Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P0182 Fuel Temperature Sensor “A” Circuit
Low Input
SOR “A” CIRCUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>
P0183 Fuel Temperature Sensor “A” Circuit
High Input
SOR “A” CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>
P0196 Engine Oil Temperature Sensor Cir-
cuit Range/Performance
SENSOR CIRCUIT RANGE/PERFORMANCE, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0197 Engine Oil Temperature Sensor Cir-
cuit Low
SENSOR CIRCUIT LOW, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0198 Engine Oil Temperature Sensor Cir-
cuit High
SENSOR CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P0222 Throttle/Pedal Position Sensor/
Switch “B” Circuit Low Input
SENSOR/SWITCH “B” CIRCUIT LOW INPUT, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0223 Throttle/Pedal Position Sensor/
Switch “B” Circuit High Input
SENSOR/SWITCH “B” CIRCUIT HIGH INPUT, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0230 Fuel Pump Primary Circuit CUIT, 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).>
P0304 Cylinder 4 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0305 Cylinder 5 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0306 Cylinder 6 Misfire Detected DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
P0327 Knock Sensor 1 Circuit Low Input
(Bank 1 or Single Sensor)
LOW INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0328 Knock Sensor 1 Circuit High Input
(Bank 1 or Single Sensor)
HIGH INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
P0332 Knock Sensor 2 Circuit Low Input
(Bank 2)
LOW INPUT (BANK 2), Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
P0333 Knock Sensor 2 Circuit High Input
(Bank 2)
HIGH INPUT (BANK 2), Diagnostic Procedure with Diagnostic 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” Circuit
(Bank 1 or Single Sensor)
SOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
DTC Item Reference

EN(H6DO)(diag)-242
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BN:DTC P0301 CYLINDER 1 MISFIRE DETECTED
NOTE:
For the diagnostic procedure, refer to DTC P0306. MISFIRE DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BO:DTC P0302 CYLINDER 2 MISFIRE DETECTED
NOTE:
For the diagnostic procedure, refer to DTC P0306. MISFIRE DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BP:DTC P0303 CYLINDER 3 MISFIRE DETECTED
NOTE:
For the diagnostic procedure, refer to DTC P0306. MISFIRE DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BQ:DTC P0304 CYLINDER 4 MISFIRE DETECTED
NOTE:
For the diagnostic procedure, refer to DTC P0306. MISFIRE DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
5CHECK HARNESS BETWEEN FUEL PUMP
CONTROL UNIT AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance of harness
between fuel pump control unit and ECM con-
nector.
Connector & terminal
(R122) No. 9 — (B135) No. 33:
(R122) No. 8 — (B136) No. 12:
Is the resistance less than 1
Ω?
Go to step 6.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
between fuel
pump control
unit and ECM
•Poor contact
of fuel pump
control unit and
ECM connector
6CHECK HARNESS BETWEEN FUEL PUMP
CONTROL UNIT AND ECM CONNECTOR.
Measure the resistance of harness between
fuel pump control unit and chassis ground.
Connector & terminal
(R122) No. 9 — Chassis ground:
(R122) No. 8 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 7.Repair the ground
short circuit
between fuel pump
control unit and
ECM.
7CHECK POOR CONTACT.
Check poor contact of ECM and fuel pump
control unit connector.
Is there poor contact of ECM
and fuel pump control unit con-
nector?
Repair the poor
contact of ECM and
fuel pump control
unit connector.
Go to step 8.
8CHECK EXPERIENCE OF RUNNING OUT OF
FUEL.
Has the vehicle experienced
running out of fuel?
Finish the diagno-
sis.
NOTE:
DTC may be re-
corded as a result
of fuel pump idling
while running out
of fuel.
Replace the fuel
pump control unit.
FU(H6DO)-36,
Fuel Pump Control
Unit.>
Step Check Yes No

EN(H6DO)(diag)-245
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Check DTC using
“List of Diagnostic
Tr o u b l e C o d e
(DTC)”. EN(H6DO)(diag)-
69, List of Diag-
nostic Trouble
Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0301, P0302,
P303, P0304,
P0305 and P0306.
Go to step 2.
2CHECK OUTPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM con-
nector and chassis ground on faulty cylinders.
Connector & terminal
#1 (B137) No. 8 (+) — Chassis ground (–):
#2 (B137) No. 9 (+) — Chassis ground (–):
#3 (B137) No. 10 (+) — Chassis ground (–):
#4 (B137) No. 11 (+) — Chassis ground (–):
#5 (B137) No. 12 (+) — Chassis ground (–):
#6 (B137) No. 13 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 7.Go to step 3.
3CHECK HARNESS BETWEEN FUEL INJEC-
TOR AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from fuel injector
on faulty cylinders.
3) Measure the resistance between ECM con-
nector and engine ground on faulty cylinders.
Connector & terminal
#1 (E5) No. 1 — Engine ground:
#2 (E16) No. 1 — Engine ground:
#3 (E6) No. 1 — Engine ground:
#4 (E17) No. 1 — Engine ground:
#5 (E43) No. 1 — Engine ground:
#6 (E44) No. 1 — Engine ground:
Is the resistance more than 1
MΩ?
Go to step 4.Repair the ground
short circuit of har-
ness between fuel
injector and ECM
connector.
4CHECK HARNESS BETWEEN FUEL INJEC-
TOR AND ECM CONNECTOR.
Measure the resistance of harness connector
between ECM connector and fuel injector on
faulty cylinders.
Connector & terminal
#1 (B137) No. 8 — (E5) No. 1:
#2 (B137) No. 9 — (E16) No. 1:
#3 (B137) No. 10 — (E6) No. 1:
#4 (B137) No. 11 — (E17) No. 1:
#5 (B137) No. 12 — (E43) No. 1:
#6 (B137) No. 13 — (E44) No. 1:
Is the resistance less than 1
Ω?
Go to step 5.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
fuel injector
connector
•Poor contact
of coupling con-
nector
5CHECK FUEL INJECTOR.
Measure the resistance between fuel injector
terminals on faulty cylinder.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 5 —
20 Ω?
Go to step 6.Replace the faulty
fuel injector. to FU(H6DO)-24,
Fuel Injector.>

EN(H6DO)(diag)-248
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
18 CHECK DTC ON DISPLAY.Are DTC P0303 and P0304
displayed?
Go to step 24.Go to step 19.
19 CHECK DTC ON DISPLAY.Are DTC P0305 and P0306
displayed?
Go to step 25.Go to step 20.
20 CHECK DTC ON DISPLAY.Are DTC P0301, P0303 and
P0305 displayed?
Go to step 26.Go to step 21.
21 CHECK DTC ON DISPLAY.Are DTC P0302, P0304 and
P0306 displayed?
Go to step 27.Go to step 28.
22 ONLY ONE CYLINDERIs there any fault in the cylin-
der?
Repair or replace
faulty par ts.
NOTE:Check the follow-
ing item.
•Spark plug
•Fuel injector
•Compression
ratio
Check DTC
P0171, P0172,
P0174 or P0175
using “List of Diag-
nostic Trouble
Code (DTC)”.
EN(H6DO)(diag)-
69, List of Diag-
nostic Trouble
Code (DTC).>
23 GROUP OF #1 AND #2 CYLINDERSAre there any faults in #1 and
#2 cylinders?
Repair or replace
faulty par ts.
NOTE:•Check the fol-
lowing item.
•Spark plug
•Fuel injec-
tor
•Ignition
coil
•Compres-
sion ratio
•If any fault
are not found,
check the “IG-
NITION CON-
TROL
SYSTEM” of #1
and #2 cylin-
ders side. to
EN(H6DO)(di-
ag)-63, IGNI-
TION
CONTROL
SYSTEM, Diag-
nostics for En-
gine Starting
Failure.>
Check DTC
P0171, P0172,
P0174 or P0175
using “List of Diag-
nostic Trouble
Code (DTC)”.
EN(H6DO)(diag)-
69, List of Diag-
nostic Trouble
Code (DTC).>
Step Check Yes No

GD(H6DO)-5
List of Diagnostic Trouble Code (DTC)
GENERAL DESCRIPTION
P0301 Cylinder 1 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0302 Cylinder 2 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0303 Cylinder 3 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0304 Cylinder 4 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0305 Cylinder 5 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0306 Cylinder 6 Misfire Detected Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0327 Knock Sensor 1 Circuit Low Input
(Bank 1 or Single Sensor)
INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0328 Knock Sensor 1 Circuit High Input
(Bank 1 or Single Sensor)
INPUT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0332 Knock Sensor 2 Circuit Low Input
(Bank 2)
INPUT (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0333 Knock Sensor 2 Circuit High Input
(Bank 2)
INPUT (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0335 Crankshaft Position Sensor “A” Cir-
cuit
“A” CIRCUIT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0336 Crankshaft Position Sensor “A” Cir-
cuit Range/Performance
“A” CIRCUIT RANGE/PERFORMANCE, Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0340 Camshaft Position Sensor “A” Cir-
cuit (Bank 1 or Single Sensor)
CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0345 Camshaft Position Sensor “A” Cir-
cuit (Bank 2)
CIRCUIT (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0420 Catalyst System Efficiency Below
Threshold (Bank 1)
BELOW THRESHOLD (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
P0442 Evaporative Emission Control Sys-
tem Leak Detected (Small Leak)
TROL SYSTEM LEAK DETECTED (SMALL LEAK), Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0447 Evaporative Emission Control Sys-
tem Vent Control Circuit Open
TROL SYSTEM VENT CONTROL CIRCUIT OPEN, Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0448 Evaporative Emission Control Sys-
tem Vent Control Circuit Shorted
TROL SYSTEM VENT CONTROL CIRCUIT SHORTED, Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0451 Evaporative Emission Control Sys-
tem Pressure Sensor
TROL SYSTEM PRESSURE SENSOR, Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0452 Evaporative Emission Control Sys-
tem Pressure Sensor Low Input
TROL SYSTEM PRESSURE SENSOR LOW INPUT, Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0453 Evaporative Emission Control Sys-
tem Pressure Sensor High Input
TROL SYSTEM PRESSURE SENSOR HIGH INPUT, Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0456 Evaporative Emission Control Sys-
tem Leak Detected (Very Small
Leak)
TROL SYSTEM LEAK DETECTED (VERY SMALL LEAK), Diagnostic Trou-
ble Code (DTC) Detecting Criteria.>
DTC Item Index