General Information

Engine Control
P2227 Barometric Pressure Circuit Range/Performance - General Information

Component Location










General Description

ECM has a barometric pressure sensor built-in its inner structure, where it detects the atmospheric pressure at the vehicle's current location. The barometric pressure sensor calculates the density of air(quantity of oxygen) and accurately detects the intake air amount along with intake air sensor and intake air temperature sensor. This does an important role in compensating the amount of fuel when driving in hillsides areas where difference in air density(oxygen) exists, and also in EGR control.

DTC Description

ECU shows AMP DTC when PUT(2nd T-MAP) and MAP values are different from AMP under the engine stop condition.

DTC Detecting Condition





Signal Waveform & Data












Fig 1) ENGINE STOP
Fig 2) ENGINE IDLE
Fig 3) ENGINE Turbo charger