Volvo All Engines (2017 Emissions) Fault Code: P220B1C PID: EMS NOx Sensor Gas Outlet High Voltage

Volvo All Engines (2017 Emissions) Fault Code: P220B1C PID: EMS NOx Sensor Gas Outlet High Voltage

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) Incorrect value, Voltage supply

Probable cause
1) Wiring harness
2) NOx sensor

Detailed information
1) Faulty sensor