Volvo All Engines (2017 Emissions) Fault Code: P229E12 PID: EMS NOx Sensor Bank 1 Sensor 2

Volvo All Engines (2017 Emissions) Fault Code: P229E12 PID: EMS NOx Sensor Bank 1 Sensor 2

Circuit description
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)
Voltage above normal or shorted high
Ignition key in drive position

Probable cause
1) Wires between NOx module and NOx sensor
2) NOx sensor

Detailed information
Faulty sensor