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Volvo engine code DTC P22FB
NOx Sensor #1: Bad Device This OBD Monitoris designed to to detect bad sensor quality. The function monitors the time when the sensor reports bad quality. If the time is greater than the fault limit a DTC is set. P22FB NOx Sensor #1: Bad Device Monitor DTC P22FB Component / System NOx Sensor #1 - Sensor Voltage High Monitor Strategy Description Bad Device Fault Limit Signal not valid for a specified time interval > 5 seconds Enable Conditions • Engine Speed >550 RPM Disable Conditions No Active DTC's: • P2200, P2203, P220A, U029D Time Required For DTC To Be Set Continuous MIL Illumination 2 Drive Cycles