Diesel Exhaust Fluid (DEF) Contamination
This bulletin involves replacing the Diesel Exhaust Fluid (DEF) system components.
A small number of DEF systems may have been accidently contaminated during manufacturing. With this contamination there may be a Malfunction Indicator Lamp (MIL) illuminated. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs).
? P20EE - SCR NOX Catalyst Efficiency Below Threshold Bank 1.
? P2BA9 - NOX Exceedence - Insufficient Reductant Quality.
? P20E8 - Reductant Pressure Too Low.
? P20E9 - Reductant Pressure Too High.
