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Volvo engine code DTC P22FE
NOx Sensor #2: Bad Device This OBD Monitoris designed to to detect bad sensor quality. The quality flag from the NOx sensor is monitored. Too long duration of not reliable sensor signal quality is considered as an error. When the NOx sensor is unable to maintain a reliable output, its signal quality will be set to not reliable. This can e.g. be the case during fast transients and fast variations in NOx Sensor measurement value. This monitor will not run until the start-up monitor is successfully completed. P22FE NOx Sensor #2: Bad Device Monitor DTC P22FE Component / System NOx Sensor #2 - 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 • Battery Voltage 11 - 16 V Disable Conditions No Active DTC's: • P2200, P2203, P220A, U029E Time Required For DTC To Be Set 10 seconds MIL Illumination 2 Drive Cycles