P2056
Reductant injector - Open circuit - Bank 2 - sensor 2
P2054
Reductant injector - Circuit low - Bank 1 - sensor 2
P2053
Reduced injector - circuit open (bank 1, unit 2)
P2052
Reductant injector - Circuit high - Bank 2 - sensor 1
P2051
Reductant injector - Circuit low - Bank 2 - sensor 1
P2050
Reductant injector - Open circuit - Bank 2 - sensor 1
P204E
Reductant pressure sensor - Circuit intermittent/erratic
P204D
Reductant pressure sensor - Circuit high
P204C
Reductant pressure sensor - Circuit low
P204A
Reductant pressure sensor circuit