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MAP Sensors (Manifold Absolute Pressure)

Shop OEM replacement MAP sensors for Toyota, Holden, Ford, Mitsubishi, Nissan, Hyundai, Kia, BMW, Mazda and more. Matched to OEM pressure range specifications. Use the Vehicle Part Finder to confirm fitment.

Shop Our MAP Sensors (Manifold Absolute Pressure)

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What Does a MAP Sensor Do?

The manifold absolute pressure (MAP) sensor measures the air pressure inside the intake manifold and sends this data to the ECU. The ECU uses manifold pressure to calculate air density and determine the correct amount of fuel to inject for the current engine load. On turbocharged engines, the MAP sensor also monitors boost pressure. Vehicles use either a MAP sensor or a MAF sensor (or both) for load calculation - your vehicle service manual will confirm which system your engine uses.

Symptoms of a Failing MAP Sensor

A faulty MAP sensor sends incorrect pressure data to the ECU, disrupting fuel delivery and ignition timing. Common symptoms include:

  • Poor acceleration or loss of power
  • Rough idle or engine surging
  • Increased fuel consumption
  • Black smoke from the exhaust - engine running rich
  • Boost pressure issues on turbocharged engines
  • Check Engine light with codes P0105 to P0109

Fitment and Technical Accuracy

MAP sensors vary in pressure range, signal output type, connector configuration, and mounting location between naturally aspirated and turbocharged applications. A sensor with the wrong pressure range will produce incorrect load calculations across the full RPM range. Every sensor in our range is matched to OEM specifications. Use the Vehicle Part Finder to confirm fitment before ordering.

Why Buy From SensorGal?

SensorGal is a 100% Australian owned family business stocking aftermarket OEM replacement MAP sensors for Toyota, Holden, Ford, Mitsubishi, Nissan, Hyundai, Kia, BMW, Mazda, Subaru, Mercedes-Benz and Suzuki. Orders placed before 12 noon are dispatched same day from our Cranbourne VIC warehouse via express post. All parts carry a 1-Year Australian warranty and our no-fuss returns policy.

Frequently Asked Questions

What fault codes does a faulty MAP sensor trigger?

A faulty MAP sensor typically triggers codes P0105 to P0109. P0105 indicates a circuit malfunction, P0106 indicates the signal is out of range, P0107 and P0108 indicate the signal is too low or too high respectively, and P0109 indicates an intermittent circuit fault. These codes combined with symptoms such as poor idle and black smoke are strong indicators of MAP sensor failure.

How do I test a MAP sensor?

With an OBD2 scanner in live data mode, the MAP sensor should read close to atmospheric pressure (around 101 kPa) with the engine off, and drop to 30 to 50 kPa at idle with the engine running due to manifold vacuum. Under wide open throttle the reading should rise back toward atmospheric. A sensor that reads flat or does not respond to throttle changes has failed. You can also test supply voltage and signal output with a multimeter.

Can I drive with a faulty MAP sensor?

You can drive short distances but engine performance will be noticeably degraded. The ECU uses the MAP sensor to calculate fuel delivery - a faulty sensor causes incorrect fuelling which leads to poor economy, rough running, and increased emissions. On turbocharged engines a faulty MAP sensor can also prevent boost control from operating correctly. Replace it as soon as possible to avoid further damage.

What does a MAP sensor do?

The Manifold Absolute Pressure (MAP) sensor measures intake manifold pressure to help the ECU calculate the correct fuel and ignition timing. It is critical for engine efficiency, particularly on turbocharged and supercharged vehicles.

What are the symptoms of a faulty MAP sensor?

Symptoms include poor acceleration, rough idle, excessive fuel consumption, black smoke, engine hesitation, and a Check Engine light with codes P0105-P0109. Turbocharged vehicles may also experience boost control issues.

What is the difference between a MAP sensor and a MAF sensor?

A MAF (Mass Air Flow) sensor directly measures the mass of air entering the engine. A MAP sensor measures manifold pressure and the ECU calculates air mass from that reading. Many vehicles use one or the other; some use both. They are not interchangeable.