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Car Sensors: Types and Functions

Modern vehicles rely on advanced car sensors to ensure peak performance, safety, and efficiency. From monitoring your engine to improving fuel economy, sensors play a critical role in keeping your vehicle running smoothly. At AAA Million Auto Parts, we provide high-quality OEM and aftermarket car sensors designed to match your vehicle’s exact specifications.

Types of Car Sensors and Their Functions

Why Choose Our Car Sensors?

OEM & aftermarket options for perfect fit
Designed for long-lasting reliability
Improve fuel efficiency & performance
Enhance vehicle safety and emissions control

Knock Sensor

Function: Detects engine knocking or pinging.
Importance: Prevents engine damage by adjusting ignition timing to reduce knock.

Throttle Position Sensor (TPS)

Function: Monitors the throttle plate angle.
Importance: Ensures proper acceleration response and smooth gear shifting in automatic transmissions

Oxygen Sensor (O2 Sensor)

Function: Measures oxygen levels in exhaust gases.
Importance: Helps the engine control unit (ECU) adjust air-fuel ratios for better fuel economy, lower emissions, and smooth engine performance.

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Mass Air Flow Sensor (MAF Sensor)

Function: Monitors the amount of air entering the engine.
Importance: Ensures the correct fuel delivery, preventing rough idling, stalling, or reduced fuel efficiency.

Manifold Absolute Pressure Sensor (MAP Sensor)

Function: Tracks air pressure inside the intake manifold.
Importance: Provides data to optimize combustion, especially in turbocharged engines.

Crankshaft Position Sensor

Function: Detects the crankshaft’s position and speed.
Importance: Critical for ignition timing and fuel injection. A faulty sensor may cause stalling or no-start issues.

Camshaft Position Sensor

Function: Monitors the camshaft’s position.
Importance: Works with the crankshaft sensor to control timing and improve engine performance.

Coolant Temperature Sensor (CTS)

Function: Reads engine coolant temperature.
Importance: Helps regulate fuel injection, ignition timing, and activates the radiator fan when needed.

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Fuel Pressure Sensor

Function: Measures fuel rail pressure.
Importance: Prevents poor fuel delivery, misfires, and starting problems.

ABS Sensor (Wheel Speed Sensor)

Function: Monitors wheel speed.
Importance: Essential for anti-lock braking systems (ABS) and traction control, ensuring safety during sudden stops.

Engine Knock Sensor

Function: Detects unusual vibrations caused by abnormal combustion.
Importance: Protects the engine from internal damage by signaling the ECU to adjust timing.

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Exhaust Gas Recirculation Sensor (EGR Sensor)

Function: Measures exhaust gas recirculation flow.
Importance: Reduces harmful emissions and improves efficiency.

Shop Car Sensors Today

Browse our wide selection of engine sensors, ABS sensors, oxygen sensors, and more. Whether you need a replacement sensor for your car or truck, we’ve got you covered with top brands at the best prices.

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