Drive Cycle H

DTC	Item	Condition
P0071	Ambient Temperature Sensor Circuit "A" Range/Performance	At least 6 hours must have elapsed since the ignition switch was turned OFF under a completely warmed up condition. For models with block heater, at least 6 hours must have elapsed without operating the block heater.
P0116	Engine Coolant Temperature Sensor 1 Circuit Range/Performance	At least 6 hours must have elapsed since the ignition switch was turned OFF under a completely warmed up condition. For models with block heater, at least 6 hours must have elapsed without operating the block heater.
P0451	Evaporative Emission System Pressure Sensor/Switch Range/Performance	At least 60 seconds must have elapsed since the ignition switch was turned OFF.
P050A	Cold Start Idle Air Control System Performance	-
P050B	Cold Start Ignition Timing Performance	-
P2431	Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance	-

Diagnostic procedure:

With the ignition switch ON (engine stopped), read the value in «Coolant Temp.» and «Intake Air Temp.». <Ref. to DISPLAY CURRENT ENGINE DATA (NORMAL MODE) , OPERATION, Subaru Select Monitor.>
If the values from step 1) satisfy the following conditions, idle the engine for two minutes or more.
Condition:

Engine coolant temperature - Intake air temperature ≤ 5°C (9°F)
NOTE:
- If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied.
- Do not move the shift lever from neutral position during idling.
Read the temporary code using the Subaru Select Monitor or general scan tool. <Ref. to OPERATION , Read Diagnostic Trouble Code (DTC).>