Engine-Codes
 
OBDII Code List
 
P0112 2001 TOYOTA COROLLA

P0112 2001 TOYOTA COROLLA - Intake Air Temperature Circuit Low Input 3ZZ-FE Engine

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

Possible causes

  • Faulty Intake Air Temperature (IAT) sensor
  • Dirty air filter
  • Intake Air Temperature (IAT) sensor harness is open or shorted
  • Intake Air Temperature (IAT) sensor circuit poor electrical connection
  • When is the code detected?

    An excessively low voltage from the sensor is sent to ECM.

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P0112 2001 Toyota Corolla Description

    The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.
    OBDII Code P0112 2001 Toyota Corolla - Intake Air Temperature Circuit Low Input 3ZZ-FE Engine - Engine-Codes.com

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