P0114 Intake Air Temperature Sensor 1 Circuit Intermittent

P0114 indicates an intermittent intake-air-temperature sensor 1 circuit fault. The IAT signal drops out or becomes implausible only at times.

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 clear intermittent IAT faults without checking connector and harness movement; the code often returns after vibration or heat.

Symptoms of P0114

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 P0114

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

Watch IAT data while moving the harness, tapping the connector, and repeating the freeze-frame conditions.
Inspect connector tension, shared MAF/IAT wiring, sensor ground, and airbox-area harness routing.
Look for temperature jumps that do not match actual airflow or underhood conditions.

Related OBD-II codes

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