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Volvo engine code DTC P0305
Misfire Monitoring at Idle Conditions This OBD monitor works by observing engine acceleration as measured by the crank angle sensor. This acceleration measurement is taken during a crank angle window where the current firing cylinder should be generating it’s torque. Acceleration is then filtered with a low pass filter and after all cylinders have fired, an average acceleration of all cylinders is generated. The error of each cylinder is calculated as the deviation of its individual acceleration reading from the average acceleration value. P0305 Misfire Single Cylinder (Cylinder 5) DTC P0305 Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 5) Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation Fault Limit Number of misfire events per cylinder 400 out of 500 Enable Conditions • Average Engine Speed 525 - 725 RPM • PTO Not Active • Number of Cylinders Misfiring < 4 Cylinders • Engine Torque 0 - 400 Nm • Vehicle Speed < 0.1 km/h • Revolution Count 125 Revolutions • Delay Time After Engine Start 60 seconds • Delay Time After Enable Condition Met 10 seconds • Ambient Air Temperature -8 - 55 °C • Barometric Pressure 75 - 105 kPa • Coolant Temperature > 65 °C Disable Conditions No Active DTC's: • P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271, P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206 Time Required For DTC To Be Set 180 Seconds MIL Illumination 2 Drive Cycles