Code Definition

P0110 — Intake Air Temperature Circuit Malfunction

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

About P0110

P0110 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 P0110 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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 P0110 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 P0110 code indicates a malfunction in the circuit of the Intake Air Temperature (IAT) sensor. This sensor measures the temperature of the air entering the engine's intake system and is critical for the Engine Control Module (ECM) to accurately calculate the air-fuel mixture for combustion. The ECM sets this code when it detects a problem in the IAT sensor circuit, such as an open or short circuit, which can impact engine performance, fuel efficiency, and emissions.

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