Possible Causes
WARNING: This page is about a different variant/trim than selected.
- Purpose of the DTC
- To monitor the selective catalytic reduction system for minimum catalyst Nox conversion efficiency by passive monitoring not met after function reset
- Electrical Cause
- No
- Mechanical Cause
- Yes
- Control Module Cavity
- Not applicable
- Monitor Description
- Selective catalytic reduction - the minimum conversion efficiency of the catalytic device is not met after function reset
- The diesel exhaust fluid quality is not meeting manufacturer specifications or the SCR catalyst is removed
- Prioritised List of Possible Causes
- Diesel exhaust fluid quality is reduced
- Defective SCR catalyst (missing)
- Deficient DEF reagent delivery
- Diesel exhaust fluid injector blockage/failure