| P2B00 – P2BA6 | ISO/SAE Reserved |
| P2BA7 | NOx Exceedence – Empty Reagent Tank |
| P2BA8 | NOx Exceedence – Interruption of Reagent Dosing Activity |
| P2BA9 | NOx Exceedence – Insufficient Reagent Quality |
| P2BAA | NOx Exceedence – Low Reagent Consumption |
| P2BAB | NOx Exceedence – Incorrect EGR Flow |
| P2BAC | NOx Exceedence – Deactivation of EGR |
| P2BAD | NOx Exceedence – Root Cause Unknown |
| P2BAE | NOx Exceedence – NOx control monitoring system |
| P2BAF – P2BFF | ISO/SAE Reserved |
