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Home >> Lexus >> 2017 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (1 Of 3) >> SFI System >> DTC P0112: Intake Air Temperature Circuit Low Input; DTC P0113: Intake Air Temperature Circuit High Input [08/2014 - ] >> Description

DTC P0112: Intake Air Temperature Circuit Low Input; DTC P0113: Intake Air Temperature Circuit High Input [08/2014 - ]: Description

Refer to DTC P0111 (See article. Refer to DESCRIPTION ).

HINT: 

When either DTC P0112 or P0113 is stored, the ECM enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

DTC No. DTC Detection Condition Trouble Area
P0112 Short in intake air temperature sensor circuit for 0.5 seconds
(1 trip detection logic)
  • Short in intake air temperature sensor circuit
  • Intake air temperature sensor (built into mass air flow meter sub-assembly)
  • ECM
P0113 Open in intake air temperature sensor circuit for 0.5 seconds
(1 trip detection logic)
  • Open in intake air temperature sensor circuit
  • Intake air temperature sensor (built into mass air flow meter sub-assembly)
  • ECM

HINT: 

When any of these DTCs are output, check the intake air temperature by entering the following menus: Powertrain / Engine and ECT / Data List / Primary / Intake Air.

Temperature Displayed Malfunction
-40°C (-40°F) Open circuit
Higher than 128°C (262°F) Short circuit