The purpose of a manifold absolute pressure sensor is to measure the range of pressure within an engine to optimize fuel injection. The normal pressure range of a MAP sensor is between 1 and 4 bar.

Typically found in fuel injected engines, the manifold absolute pressure (MAP) sensor is one of the sensors an engine control module (ECM) uses to calculate fuel injection for optimal air-fuel ratio by continuously monitoring intake manifold pressure information.

Code P0106 is commonly caused by malfunctioning MAP/BARO sensors, electrical faults, and vacuum leaks. Typical symptoms of a code P0106 include a lit check engine light, excessive exhaust emissions, and poor fuel economy.