P0095 Intake Air Temperature Sensor 2 Circuit

P0095 indicates an intake air temperature sensor 2 circuit fault. The controller cannot trust the second intake temperature input.

Code details

Generic OBD-II · P0

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace airflow or boost sensors until the intake air temperature 2 circuit is tested directly.

Symptoms of P0095

Check-engine light on, sometimes with rough or uneven running.
Hesitation, surging, or a noticeable change in fuel economy.
Occasionally hard starting or a smell of unburnt fuel.

Common causes of P0095

A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
Wiring, connector, or fuel-delivery problems that skew the reading.

Useful checks before replacing parts

Compare intake air temperature sensor 2 with ambient temperature, sensor 1, charge temperature, and coolant temperature after a cold soak.
Check sensor signal, reference voltage, ground, connector condition, harness routing, and contamination near the intake tract.
Inspect for sensor disconnection, intake plumbing service, water intrusion, heat soak effects, and related MAF or boost sensor codes.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.