2009 SUBARU TRIBECA Ho2 sensor

EN(H6DO)(diag)-102
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
L: DTC P0050 HO2S HEATER CONTROL CIRCUIT (BANK 2 SENSOR 1)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION (BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-105
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
M: DTC P0051 HO2S HEATER CONTROL CIRCUIT LOW (BANK 2 SENSOR 1)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION LOW (BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-109
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
N: DTC P0052 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 2 SENSOR 1)
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION HIGH (BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-112
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
O: DTC P0057 HO2S HEATER CONTROL CIRCUIT LOW (BANK 2 SENSOR 2)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION LOW (BANK 2 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-116
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
P: DTC P0058 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 2 SENSOR 2)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION HIGH (BANK 2 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

GD(H6DO)-2
List of Diagnostic Trouble Code (DTC)
GENERAL DESCRIPTION
1. List of Diagnostic Trouble Code (DTC)
A: LIST
DTC Item Index
P0011 Intake Camshaft Position Timing -
Over-Advanced (Bank 1)
- OVER-ADVANCED (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
P0016 Crankshaft Position - Camshaft
Pos it i o n C o r r el a ti o n ( B a nk 1)
SHAFT POSITION CORRELATION (BANK 1), Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0018 Crankshaft Position - Camshaft
Pos it i o n C o r r el a ti o n ( B a nk 2)
SHAFT POSITION CORRELATION (BANK 2), Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0021 Intake Camshaft Position Timing -
Over-Advanced (Bank 2)
ING - OVER-ADVANCED (BANK 2), Diagnostic Trouble Code (DTC) Detect-
ing Criteria.>
P0026 Intake Valve Control Solenoid Cir-
cuit Range/Performance (Bank 1)
CIRCUIT RANGE/PERFORMANCE (BANK 1), Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0028 Intake Valve Control Solenoid Cir-
cuit Range/Performance (Bank 2)
CIRCUIT RANGE/PERFORMANCE (BANK 2), Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0030 HO2S Heater Control Circuit (Bank
1 Sensor 1)
(BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0031 HO2S Heater Control Circuit Low
(Bank 1 Sensor 1)
LOW (BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0032 HO2S Heater Control Circuit High
(Bank 1 Sensor 1)
HIGH (BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0037 HO2S Heater Control Circuit Low
(Bank 1 Sensor 2)
LOW (BANK 1 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0038 HO2S Heater Control Circuit High
(Bank 1 Sensor 2)
HIGH (BANK 1 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0050 HO2S Heater Control Circuit (Bank
2 Sensor 1)
(BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0051 HO2S Heater Control Circuit Low
(Bank 2 Sensor 1)
LOW (BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0052 HO2S Heater Control Circuit High
(Bank 2 Sensor 1)
HIGH (BANK 2 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0057 HO2S Heater Control Circuit Low
(Bank 2 Sensor 2)
LOW (BANK 2 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0058 HO2S Heater Control Circuit High
(Bank 2 Sensor 2)
HIGH (BANK 2 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0068 MAP/MAF - Throttle Position Cor-
relation
CORRELATION, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0076 Intake Valve Control Circuit Low
(Bank 1)
LOW (BANK 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0077 Intake Valve Control Circuit High
(Bank 1)
HIGH (BANK 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0082 Intake Valve Control Circuit Low
(Bank 2)
LOW (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>

GD(H6DO)-15
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
F: DTC P0028 INTAKE VALVE CONTROL SOLENOID CIRCUIT RANGE/PER-
FORMANCE (BANK 2)
NOTE:
For diagnostic procedures, refer to DTC P0026. TROL SOLENOID CIRCUIT RANGE/PERFORMANCE (BANK 1), Diagnostic Trouble Code (DTC) Detecting
Criteria.>
G: DTC P0030 HO2S HEATER CONTROL CIRCUIT (BANK 1 SENSOR 1)
1. OUTLINE OF DIAGNOSIS
Detect functional errors of the front oxygen (A/F) sensor heater.
Judge as NG when it is determined that the front oxygen (A/F) sensor impedance is large when looking at en-
gine status such as deceleration fuel cut.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously in 30 seconds after starting the engine.
(1) Gasket (3) Sensor housing (4) Protection tube
(2) Ceramic heater
Secondary Parameters Enable Conditions
Condition established time 30 seconds or more
Battery voltage > 10.9 V
Control duty ≥ 35% Experienced
After fuel cut 20 seconds or more
EN-02181
( 1 )( 2 )
( 3 )( 4 )

GD(H6DO)-17
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
H: DTC P0031 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of heater.
The heater performs duty control, and the output terminal voltage at ON is 0 V and the output terminal voltage
at OFF is the battery voltage.
Judge NG when the terminal voltage remains Low.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge NG when the continuous time until completing the malfunction criteria below becomes more than 1
second (8 cycles).
Time Needed for Diagnosis: 1 second
Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
(A) Battery voltage (C) 128 milliseconds (D) Low error
(B) Front oxygen (A/F) sensor heater
output voltage

Secondary Parameters Enable Conditions
Battery voltage≥ 10.9 V
Judgment Value
Malfunction Criteria Threshold Value
Output voltage level Low
Fr o nt ox yg en (A / F ) se ns or h ea t er co n tr o l
duty
< 87.5%
EN-01792
(C)
(A)
(B)
ON
OFF
0V(D)