Intake Air Temperature Sensor for Toyota Engines

This IAT sensor measures the temperature of the air entering the intake. The engine ECU needs this data to adjust fuel delivery and ignition timing. With correct intake temp information, the mixture stays balanced, cold starts are smooth, and fuel economy stays strong.

How It Works

Inside is a fast-response thermistor. As air warms or cools, its electrical resistance changes. The ECU reads that signal voltage and calculates air density, then trims injector pulse and spark angle so your engine runs clean and efficient.

Why You Need It ✅

Reliable temperature feedback prevents rich or lean conditions, improves throttle response, and reduces emissions. It’s a direct-fit, OEM-quality replacement for tired or contaminated sensors.

What Happens If It Fails ⚠️

Signs include hard cold starts, rough idle, flat acceleration, black smoke, poor MPG, and a check engine light (typical P0112/P0113). The ECU may go into a default map, hurting power and catalysts over time. Replace early to protect the engine and keep performance consistent.

Compatibility

• Camry
• Celsior
• Corolla
• Wish