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

WARNING: This page is about a different variant/trim than selected.

-
DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:
- Improper idling
- Poor driving performance
NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DO 2.0 (EXCEPT FOR HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

CHECK DTC .
Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is DTC other than P0111 displayed? (Current malfunction)

Yes: Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DO 2.0 (EXCEPT FOR HEV))>DIAGNOSTIC TROUBLE CODE (DTC) .

No: Go to 2.
CHECK DATA MONITOR .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor or a general scan tool, read the value of [Intake Air Temp.].
  NOTE:
  - Subaru Select Monitor For detailed operation procedures, refer to "Common (Diagnostics)". Ref. to COMMON (DIAG)>DATA MONITOR .
  - General scan tool For detailed operation procedures, refer to the general scan tool operation manual.
3. Read the change of the value in [Intake Air Temp.] 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 [Intake Air Temp.] change between heating and cooling?
  
  Yes: Repair the poor contact of ECM connector.
  
  No: Replace the mass air flow and intake air temperature sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR .