Drive Cycle H

DTC	Item	Condition
P0071	Ambient Temperature Sensor Circuit "A" Range/Performance	6 hours have elapsed since ignition switch is 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	6 hours have elapsed since ignition switch is 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	60 seconds have elapsed since ignition switch is OFF.
P050A	Cold Start Idle Air Control System Performance	-
P050B	Cold Start Ignition Timing Performance	-

Diagnostic procedure: 

1. With the ignition switch ON (engine stopped), read the values in «Coolant Temp.» and «Intake Air Temp.». <Ref. to DISPLAY CURRENT ENGINE DATA , OPERATION, Subaru Select Monitor.>
2. 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.
   • Hold the select lever in "P" range or "N" range at idling.
3. Read the temporary code using the Subaru Select Monitor or general scan tool. <Ref. to OPERATION , Read Diagnostic Trouble Code (DTC).>