MAP Sensor (Manifold Absolute Pressure)
The MAP sensor measures pressure in the intake manifold so the engine control unit can calculate engine load.
What is MAP Sensor (Manifold Absolute Pressure)?
On turbo engines it also measures boost. Some engines use it instead of a mass air flow sensor. It usually sits on the intake manifold or charge pipe. With the engine off, the MAP sensor reads atmospheric pressure, which helps the control unit adjust for altitude. Comparing it with the barometric sensor is a quick check.
How it works
A pressure-sensitive element changes its output voltage with manifold pressure.
Why it matters for your car
A faulty MAP sensor causes poor running, wrong fuelling and codes. A split vacuum hose to the sensor gives false readings.
Other terms
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- Battery Recycling
- Car Loan
- Carburettor
- Differential
- Directional Tyres
- Four-Wheel Drive (4WD, 4×4)
- Fuel Additive
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- Load Securing
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- Subframe
- Tube-Type Tyre (Inner Tube)