VOLVOUU All Engines (2010 Emissions) Fault Code: SPN 3216 FMI 20 PID: PPID 348 Aftertreatment Intake NOx

The NOx sensor measures the amount of NOx in the exhaust system. The NOx sensor is connected in the J1939-2 data link. This diagnostic trouble code (DTC) indicates a NOx monitoring failure. For example; NOx sensor short- or open circuit, NOx sensor removed, NOx sensor missing signal.

Probable cause
1) Sensor not mounted in exhaust stream
2) NOx sensor

Detailed information
1) Faulty sensor