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Home >> Toyota >> 2014 >> Prius Two >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0171)) (Except Plug-In) >> SFI System >> DTC P0106: Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem [10/2013 - ] >> Description
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DTC P0106: Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem [10/2013 - ]: Description

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 and purge VSV opening amount according to changes in the intake manifold pressure.

Fig 1: Identifying Manifold Absolute Pressure Vs Voltage Graph
GTY319518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC No. DTC Detection Condition Trouble Area
P0106 Intake manifold pressure measured after engine start drops by less than 3 kPa (22.5 mmHg) compared to the intake manifold pressure (atmospheric pressure) measured before engine start (2 trip detection logic).
  • Intake system
  • Manifold absolute pressure sensor