P2000,P2001 -Nox trap- efficiency below threshold
P20EE,P20EF,P20F2,P20F3- Nox sensor efficiency below threshold
P06EA,P06EB- Nox sensor- Processor fault
P20EC,P20ED,P20F0,P20F1 -Nox sensor over temperature condition
P21B2 -Nox trap  excessive time to enter closed loop control
P21B3- Nox trap closed loop control-signal too high
P21B4,P21B5 Nox trap bank2 temperature too high
P2200 Nox sensor circuit malfunction
P2201 Nox sensor range/performance problem
P2202 Nox sensor low input
P2203 Nox snsor high input
P2204 Nox sensor intermittent input
P2205 /P2206/P2207/P2208 Nox heater control error