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Symptoms, Causes, Diagnosis, and Repair of P0113 Fault Code

Fault code P0113 is a generic OBD-II diagnostic trouble code defined as “Intake Air Temperature Sensor 1 Circuit High Input” . This indicates that the vehicle’s Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected that the voltage signal from the Intake Air Temperature (IAT) Sensor 1 is higher than the expected normal operating range, typically indicating an open circuit or high resistance in the sensor circuit.