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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (ENGINE CONTROLS (H6DO) (DIAGNOSTICS) (1 OF 5))DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P0111 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE BANK 1TROUBLE SYMPTOM
2016 Subaru Legacy 2.5i

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

2016 Subaru Legacy 2.5iSECTION Trouble Symptom
WARNING: This page is about a different variant/trim than selected.
  • 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 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 "Read Current Data For Engine". < Ref. to 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? Replace the mass air flow and intake air temperature sensor. < Ref. to MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR . > Check for DTC P0125. < Ref. to DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.