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Home >> Lexus >> 2012 >> HS 250h >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P2419)) >> SFI System >> DTC P0112, P0113: Intake Air Temperature Circuit Low Input; Intake Air Temperature Circuit High Input >> Description
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DTC P0112, P0113: Intake Air Temperature Circuit Low Input; Intake Air Temperature Circuit High Input: Description

Refer to DTC P0111. Refer to DESCRIPTION .

HINT: 

When either DTC P0112 or P0113 is set, the hybrid vehicle control ECU enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 20°C (68°F) by the hybrid vehicle control ECU. 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)
  • Hybrid vehicle control ECU
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)
  • Hybrid vehicle control ECU

HINT: 

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

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