- Engine Light ON (or Service Engine Soon Warning Light)
- Engine rough idle
- Engine hesitation

- Manifold Absolute Pressure harness is open or shorted
- Manifold Absolute Pressure sensor poor electrical circuit connector
- Faulty Manifold Absolute Pressure sensor
- Faulty Powertrain Control Module (PCM) or Engine Control Module (ECM)

An excessively high voltage from the sensor is sent to ECM

The Manifold Absolute Pressure (MAP) sensor provides instantaneous manifold pressure information to the engine's Engine Control Module (ECM). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. A fuel-injected engine may alternately use a Mass Air Flow (MAF) sensor to detect the intake airflow. A typical configuration employs one or the other, but seldom both.

In some vehicles the absolute pressure sensor is built into ECM

MAP sensor examples:

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P0108 ACURA
P0108 HONDA
P0108 CHRYSLER
P0108 DODGE
P0108 JEEP
P0108 FORD
P0108 HYUNDAI
P0108 ISUZU
P0108 KIA
P0108 MAZDA
P0108 MITSUBISHI
P0108 SUBARU
P0108 AUDI
P0108 VOLKSWAGEN
P0108 PONTIAC
P0108 JAGUAR