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Volvo engine code DTC P2227
Barometric Pressure Sensor (BPS): Rationality Monitor This OBD rationality monitor for the Barometric Pressure sensor evaluates the plausibility of the sensor comparing the Barometric, Intake Air and Crankcase pressure sensor values. This evaluation is performed in two scenarios: Pre Cranking: A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported. Engine running: The engine running sensor evaluation is similar to the Pre Cranking sensor evaluation. The enable conditions are defined when the vehicle is typically at idle when Intake Air and Crankcase pressure are similar to Barometric pressure. P2227 Barometric Pressure Sensor (BPS): Rationality Monitor DTC P2227 Component / System BPS Rationality Monitor Strategy Description Barometric pressure sensor evaluation Fault Limit Delta = Barometric pressure - reference pressure > 10kPa Enable Conditions Engine Pre-Crank • Key On Active • Battery Voltage > 8 V Engine Running • Engine Speed 450 - 750 RPM • Engine Torque 100 - 400 Nm Disable Conditions No Active DTC's: • P2226, P2227, P2229, P051A, P051B, P051C, P051D, P2578 Time Required For DTC To Be Set 8 seconds MIL Illumination 2 Drive Cycles