Code Definition

P0113 — Intake Air Temperature Circuit High Input

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0113

P0113 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0113 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0113 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0113 code indicates a high input condition in the circuit of the Intake Air Temperature (IAT) sensor. This sensor measures the temperature of air entering the engine and provides crucial data to the Engine Control Module (ECM) for the calibration of fuel injection and ignition timing. A high input signal from the IAT sensor could indicate an overestimation of air temperature, potentially leading to issues such as improper air-fuel mixture, increased emissions, and reduced engine performance.

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