Powertrain Freeze Frame Data; Emission-Related Powertrain Diagnostic Trouble Code; Clear/Reset Emission-Related Diagnostic Information - Subaru LEGACY Service Manual

ENGINE (DIAGNOSTICS)
3. MODE $02 (POWERTRAIN FREEZE FRAME DATA)
Refer to data denoting the operating condition when trouble is detected by the on-board diagnosis system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
PID
02 DTC that caused CARB required freeze frame data storage
03 Fuel system control status
04 Calculated engine load value
05 Engine coolant temperature
06 Short term fuel trim
07 Long term fuel trim
0B Intake manifold absolute pressure
0C Engine speed
0D Vehicle speed
0E Ignition timing advance
0F Intake air temperature
10 Air flow rate from mass air flow sensor
11 Throttle valve opening angle
NOTE:
Refer to OBD-II general scan tool manufacturer's operation manual to access freeze frame data (MODE
$02).
4. MODE $03 (EMISSION-RELATED POWERTRAIN DIAGNOSTIC TROUBLE CODE (DTC))
Refer to "Read Diagnostic Trouble Code (DTC)" for information about data denoting emission-related pow-
ertrain DTC. <Ref. to EN(H4SO 2.5)(diag)-33, Read Diagnostic Trouble Code (DTC).>
5. MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)
Refer to the mode used to clear or reset emission-related diagnostic information (OBD-II trouble diagnostic
information).
NOTE:
Refer to OBD-II general scan tool manufacturer's operation manual to clear or reset emission-related diag-
nostic information (MODE $04).
6. MODE $06
Refer to test value of troubleshooting and data of test limit on support data bit sequence table. List of support
data is shown in the following table.
TID CID
$01 $01 Catalyst system efficiency below threshold
$81
$02 Exhaust gas recirculation control circuit range/performance
$02
$81 Evaporative emission control system (CPC open malfunction)
$02 Evaporative emission control system small leak
$03 Evaporative emission control system small leak (Immediate normality judgment)
$03
$04 Evaporative emission control system large leak
Evaporative emission control system very small leak (Immediate normality judg-
$05
ment)
$06 Evaporative emission control system very small leak
O
$01
$05
O
$02
$81
O
$06
$02
O
$07 $01
OBD-II General Scan Tool
sensor circuit slow response (Bank 1 Sensor 1) Lean → Rich
2
sensor circuit slow response (Bank 1 Sensor 1) Rich → Lean
2
sensor circuit (Bank 1 Sensor 2) <$81 or $02>
2
sensor circuit slow response (Bank 1 Sensor 2)
2
EN(H4SO 2.5)(diag)-24
Data
Test value & Test limit
Unit of measure
—
—
%
°C
%
%
kPa
rpm
km/h
°
°C
g/sec
%
Unit
—
mmHg
—
pa
pa
pa
pa
pa
millisecond
V
second