DTC P0111: Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 1: Notes

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

Improper idling
Poor driving performance

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Inspection Mode>PROCEDURE .

CHECK ENGINE COOLANT TEMPERATURE.
1. Start the engine and warm up completely.
2. Read the value of «Coolant Temp.» 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 ENGINE (DIAGNOSTICS) (H4DO)>SUBARU SELECT MONITOR
  - General scan tool
    For detailed operation procedures, refer to the general scan tool operation manual.
Is the value of «Coolant Temp.» 75°C (167°F) or more?

Yes: Replace the mass air flow and intake air temperature sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR

No: Check for DTC P0125. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL