DTC P0111 Intake Air Temperature Sensor Range/Performance Problem: Trouble Symptom

Improper idling
Poor driving performance

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .>	Go to step 2 .
2 CHECK CURRENT DATA. Turn the ignition switch to ON. Read the value of «IAT Sensor #11» using the Subaru Select Monitor or a general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "Current Data Display For Engine". <Ref. to SUBARU SELECT MONITOR .> General scan tool For detailed operation procedures, refer to the general scan tool operation manual. Read the change of the value in «IAT Sensor #11» while heating and cooling the mass air flow and intake air temperature sensor using a hair dryer. CAUTION: Do not heat the part to the temperature where you cannot touch it with your bare hand in order to prevent burning yourself and protect the part.	Does the value of «IAT Sensor #11» change between heating and cooling?	Repair the poor contact of ECM connector.	Replace the mass air flow and intake air temperature sensor. <Ref. to MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR .>