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Volvo engine code DTC P220F
NOx Sensor #2: Heater Performance This OBD monitoris designed to detect faulty startup behavior. The function monitors the time from enable command sent (ok for sensor to heat itself since all water is considered to be evaporated from the exhaust stream) to the time when the sensor reports full readiness. If the time is too long the sensor does not fulfill the requirements. (Activating the NOx sensors in an environment with water present, there is a risk the sensor elements will crack.) P220F NOx Sensor #2: Sensor Start Up Monitor DTC P220F Component / System NOx #2 Sensor - Sensor Start Monitor Strategy Description Time to for sensor to report good quality Fault Limit Time evaluation > 600 seconds Enable Conditions • Battery Voltage 11- 16V • Engine Speed > 500 RPM • Dew point trig Enabled (ECTstart delay and dew point calculation delay) Disable Conditions No Active DTC's: • P2200, P2203, P220A, U029E Time Required For DTC To Be Set 10 seconds MIL Illumination 2 Drive Cycles