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Engine Sensors for car

Engine Sensors for car

The rise of engine sensors

New vehicles are increasingly equipped with more engine sensors, sometimes more than 100 sensors per vehicle in high-end cars – and that trend looks set to continue.

Valeo has been a global powertrain sensors specialist for more than 40 years and they bring that experience and expertise to the independent aftermarket with an Original Equipment (O.E.) quality range of engine sensors.

A continuous range extension

Over 320 individual part numbers are currently available for the 9 types of engine sensors, including speed sensors, camshaft sensors, mass air flow meters, crankshaft sensors, oil pressure sensors, air intake temperature sensors, knock sensors, TMAP sensors and oil level sensors. Valeo continues to extend their engine sensor range and offers you a smart one-stop-shop purchase.


Added values

Reasons to choose Valeo engine sensors

A premium range in which you can trust

O.E. specifications - no compromise on performance and durability

Perfect fit and easy installation

Genuine technical support to help you service more efficiently


Speed sensor

What is a speed sensor?

A speed sensor contains a pulse generator that converts the mechanical rotating movement into an electric signal to the speedometer, through the Electrical Control Unit (ECU). In vehicles without ABS, before 2004, this is mechanically driven from the gearbox. Inside the gearbox, the output shaft contains a gear wheel which rotates with the shaft. Linked to this gear wheel, and driven by it, is a small pinion gear, speedometer drive pinion.


Oxygen sensor

What is an Oxygen sensor?

Oxygen sensors, also known as Lambda sensors, are critically important for your vehicle. Their principle is based on a comparison between the measurement of the remaining Oxygen concentration in the exhaust gases and the Oxygen content in the ambient air. They are the most effective way to monitor and regulate the combustion process.

They control the mixture of the air-fuel ratio and ensure that the engine works at the optimum level.


Mass air flow meter

What is a mass air flow meter?

A Mass Air Flow Meter measures the amount of air density flowing into the vehicle’s air intake. The information provided helps the ECU in delivering the proper mix of air-fuel mixture to the engine and the spark timing. The MAF not only measures the volume of air but also compensates for its density.


Camshaft sensor

What is a camshaft sensor?

A camshaft sensor monitors the engine speed and valve position. It determines which cylinder is firing to establish injector synchronization and the coil firing sequence. Signals are sent to the Engine Control Module (ECM) to control the fuel injection, the time of ignition and other functions. The camshaft sensor is essential for the engine to keep the correct timing and run properly.


Crankshaft sensor

What is a crankshaft sensor?

A crankshaft sensor defines the rotating speed and the position of the crankshaft. This sensor sends information to the ECU in order to control the fuel injection or the ignition system timing. They display speed on the RPM and are often mounted near the flywheel that serves as a rotating target TDC (top dead centre ).


Oil pressure sensor

What is an oil pressure sensor?

An oil pressure sensor measures the oil pressure in the sump and delivers the data to the ECU and pressure gauge of the engine oil. In case of low engine oil pressure, the ECU will report it to the driver and adopt control measures automatically to protect the engine.


Air intake temperature sensor

What is an air intake temperature sensor?

An air-intake temperature sensor is mounted on the air intake manifold that detects the mass air flow and sends a signal to the ECU. It detects boosts in air temperature, by working in dual stage with the mass air flow sensor which includes a temperature sensor too.


Knock sensor

What is a knock sensor?

A knock sensor detects the engine noises through different frequencies and sends a signal to the ECU. The ECU uses this information to limit the spark advance to prevent detonation from occurring. Every vehicle is equipped with a knock sensor in order for the control unit to the ignition system to anticipate a knock or detonation.


TMAP sensor

What is a TMAP sensor?

A temperature manifold air pressure sensor (TMAP sensor) detects the mass air flow and the pressure and sends a signal to the ECU.


Oil level sensor

What is an oil level sensor?

An oil level sensor is to ensure that the level of the engine oil does not become dangerously low without being noticed, causing damage to the engine. It can measure the oil level continuously, both in the dynamic and static range.