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Home >> Volvo >> 2012 >> XC90 Base, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Ignition And Engine Control Systems - Specifications, Other >> Vehicle Communication Information, Engine Control Module (ECM) (B5254T2; 2005-2007) >> Description Of Detailed Diagnostic Trouble Code Information Readout >> Description Of Frozen Values >> Boost Pressure (HPA)
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Boost Pressure (HPA)

The value is calculated from the boost pressure sensor and indicates the pressure in the induction system after the turbocharger but before the throttle.

The engine control module (ECM) calculates boost pressure from the boost pressure sensor. The pressure is relative to atmospheric pressure.

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