Code Definition

P0097 — Intake Air Temperature Sensor 2 Circuit Low

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

About P0097

P0097 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 P0097 is stored, the module has detected a signal or supply voltage lower than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

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 P0097 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 P0097 code indicates a low input condition in the circuit of the Intake Air Temperature (IAT) Sensor 2. This sensor measures the temperature of the air entering the engine's intake system, providing crucial data for the Engine Control Module (ECM) to optimise fuel injection, ignition timing, and engine performance. The ECM sets this code when it detects that the voltage from the IAT Sensor 2 is lower than expected, suggesting a potential issue in the sensor or its circuit.

Quick Facts