Inspection Mode H

DTC	Item	Condition	Number of driving cycles on the detecting condition
P0071	AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" RANGE/PERFORMANCE	6 hours or more 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.	2
P0116	ENGINE COOLANT TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE		2
P0196	ENGINE OIL TEMPERATURE SENSOR "A" RANGE/PERFORMANCE		2
P0451	EVAP SYSTEM (CPC) PRESSURE SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE	60 seconds or more have elapsed since ignition switch is OFF.	2
P050A	COLD START IDLE CONTROL SYSTEM PERFORMANCE	-	2
P050B	COLD START IGNITION TIMING PERFORMANCE	-	2

Diagnostic procedure:

With the ignition switch ON (engine stopped), read the values in [Engine Coolant Temperature] and [Intake Air Temperature]. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>DATA 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.
- For CVT models, hold the select lever to "P" range or "N" range at idling, and for MT models, the gear shift lever in the neutral position at idling.
Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .