VOLVOUU All Engines (2017 Emissions) Fault Code: P22A100 PID: EMS NOx Sensor Circuit High Bank 1 Sensor 2
The NOx sensor measures the amount of NOx in the exhaust system. The NOx sensor is connected in the J2284/ISO 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.
Conditions for diagnostic trouble code (DTC):
1) Voltage above normal or shorted high
2) Ignition key in drive position
Probable cause
1) Wires between NOx module and NOx sensor
2) NOx sensor
Detailed information
1) Faulty sensor
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