VOLVOUU All Engines (2017 Emissions) Fault Code: P11609B PID: EMS NOx Exceedance – Root Cause Unknown (First Level)

VOLVOUU All Engines (2017 Emissions) Fault Code: P11609B PID: EMS NOx Exceedance – Root Cause Unknown (First Level)

Conditions for diagnostic trouble code (DTC)
One or more diagnostic trouble codes (DTCs) have been set for faults in the exhaust aftertreatment

Observable symptoms
Smell of ammonia

Detailed information
1) Diagnostic trouble codes (DTCs) are stored for 400 days counted from the first DTC setting occurrence