Subaru 2009 IMPREZA Service Manual page 467

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
*P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
Coolant Thermostat (Engine Coolant Temperature Below Thermostat Reg-
*P0128
ulating Temperature)
*P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
*P0171 System Too Lean (Bank 1)
*P0172 System Too Rich (Bank 1)
P0196 Engine Oil Temperature Sensor Circuit Range/Performance
*P0301 Cylinder 1 Misfire Detected
*P0302 Cylinder 2 Misfire Detected
*P0303 Cylinder 3 Misfire Detected
*P0304 Cylinder 4 Misfire Detected
*P0420 Catalyst System Efficiency below Threshold (Bank 1)
*P0442 Evaporative Emission Control System Leak Detected (Small Leak)
*P0451 Evaporative Emission Control System Pressure Sensor
*P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
*P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)
*P0459 Evaporative Emission System Purge Control Valve Circuit High
P1443 Vent Control Solenoid Valve Function Problem
*P2096 Post Catalyst Fuel Trim System Too Lean (Bank 1)
*P2097 Post Catalyst Fuel Trim System Too Rich (Bank 1)
Drive Cycle
Item
EN(H4SO)(diag)-50
Condition
Engine coolant temperature at engine
start is less than 20°C (68°F).
—
—
Complete diagnosis with drive cycle B
or C as well.
Complete diagnosis with drive cycle B
or C as well.
—
Complete diagnosis with drive cycle B
or C as well.
Complete diagnosis with drive cycle B
or C as well.
Complete diagnosis with drive cycle B
or C as well.
Complete diagnosis with drive cycle B
or C as well.
—
Engine coolant temperature at engine
start is less than 30°C (86°F).
—
Engine coolant temperature at engine
start is less than 30°C (86°F).
Engine coolant temperature at engine
start is less than 30°C (86°F).
—
—
Complete diagnosis with drive cycle B
or C as well.
Complete diagnosis with drive cycle B
or C as well.