DTC P0106: Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem [08/2013 - ]: Description

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

The manifold absolute pressure sensor detects the intake manifold pressure as a voltage using a built-in sensor. The ECM calculates intake manifold pressure based on this voltage and also calculates the EGR valve assembly and purge VSV opening amount according to changes in the intake manifold pressure, and detects errors in the pressure sensor using the changes in pressure.

Fig 1: Manifold Absolute Pressure VS Voltage Graph

DTC No.	DTC Detection Condition	Trouble Area
P0106	Intake manifold pressure measured after engine start drops by less than 2 kPa(gauge) [15 mmHg(gauge)] compared to the intake manifold pressure (atmospheric pressure) measured before engine start (2 trip detection logic).	Intake system Manifold absolute pressure sensor