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Volvo engine code DTC U029D
NOx Sensor #1: Circuit Monitors U029D NOx Sensor #1: Missing Signal DTC U029D Component / System NOx Sensor - Missing Signal Monitor Strategy Description Signal not recieved to ACM after key on Fault Limit Missing Signal No message for > 5 s Enable Conditions • Key On Active • Battery Voltage > 8V Disable Conditions No Active DTC's: • N/A Time Required For DTC To Be Set 10 seconds MIL Illumination 2 Drive Cycles